baber/WOPTO huggingface dataset:
Patent WO-2020155436-A1 (WO)
Inventor: ZHANG CHEN
IPC: G06Q50/22
Filed: 2019-04-25
Abstract: 一种优化碳信息披露方案的方法、系统和存储介质，所述方法基于改进树种算法能够解决投资者信息共享行为下企业碳信息披露、企业价值增加以及企业风险成本控制三者协同问题，能够辅助企业决策向不同投资者的碳信息披露程度，建立完善的碳信息披露机制。此外，与传统树种算法相比，改进树种算法主要通过引进随机个体来改善传统算法中的过早收敛和局部早熟的现象。此外，通过控制算法搜索趋势因子，在迭代过程中不断自适应调整算法选择随机位置的概率，以便在迭代后期帮助算法跳出局部最优，增加种群的多样性，提高算法的全局搜索能力。
Patent WO-2019218900-A1 (WO)
Title: Neural network model and data processing method and processing apparatus
Inventor: YANG FAN
IPC: G06N3/02
Filed: 2019-05-07
Abstract: Disclosed by the embodiments of the present application are a neural network model and data processing method and processing apparatus, relating to the technical field of computers and solving the problem of performance being low when a neural network model processes different tasks. The neural network model is used for performing N tasks, comprising M network layers, M being a positive integer; the i-th network layer has a shared weight value and N sets of unique weight values for performing each of the N tasks; each set of unique weight values is used for performing one of the N tasks, each set of unique weight values corresponds to one of the N tasks, and 1≤i≤M; the i-th network layer, when executing a first task, is configured as follows: obtain input data; according to the t-th group of unique weight values and shared weight values, and the input data, obtain output data; if 1≤i<M, then transmit the output data to the i+1th network layer, the t-th unique weight value corresponding to the first task, and 1≤t≤N; if i=M, then outputting the output data.
Patent WO-2020029630-A1 (WO)
Title: Transaction method and system based on centralized clearing and blockchain record keeping
Inventor: YANG XINYING
IPC: G06Q20/38
Filed: 2019-05-15
Abstract: Disclosed are a transaction method and system based on centralized clearing and blockchain record keeping. A blockchain network comprises several member nodes, and a user signs up for a virtual resource account on a specific member node, wherein the specific member node comprises a service logic execution module, a database management module and a blockchain function module. Transaction feasibility verification for a transaction request is carried out by the service logic execution module, and after verification is passed, the database management module is instructed to execute an account balance modification operation, that is, a specific resource amount is deducted from a virtual resource account corresponding to a payment user identifier, and the specific resource amount is added to a virtual resource account corresponding to an earning user identifier. Moreover, the service logic execution module can further generate a log file for recording the account balance modification operation, and send the log file to the blockchain function module, and the blockchain function module broadcasts the log file to the blockchain network.
Patent WO-2020001264-A1 (WO)
Title: 定时调整信息的配置方法及装置
Inventor: ZHANG NAN
IPC: H04W56/00
Filed: 2019-06-11
Abstract: 本申请提供了一种定时调整信息的配置方法及装置。其中，该方法包括：第一传输节点通过I个信令指示第二传输节点到M个第一传输节点间的N个传输链路所对应的定时调整信息，其中I，M，N均为大于或等于1的整数。
Patent WO-2020001409-A1 (WO)
Title: 一种虚拟网络功能vnf部署方法及装置
Inventor: HUANG ZEXU
IPC: G06F9/455
Filed: 2019-06-24
Abstract: 本申请实施例公开了一种虚拟网络功能VNF部署方法及装置，涉及网络功能虚拟化领域，解决了在NFV系统中部署VNF时导致VNFD的数量非常多，维护、管理成本非常高的问题。具体方案为：获取虚拟网络功能描述VNFD，VNFD包括输入参数信息、输入适配信息和VNF描述信息，输入参数信息包括N个管理单元信息，每个管理单元信息用于描述管理单元的属性，输入适配信息用于指示管理单元与逻辑管理单元的映射关系，VNF描述信息用于指示在N个逻辑管理单元上部署VNF；获取N个管理单元标识；根据输入适配信息将N个管理单元标识对应的管理单元映射到N个逻辑管理单元；根据VNF描述信息在N个逻辑管理单元上创建VNF。本申请实施例用于部署VNF的过程。
Patent WO-2020048274-A1 (WO)
Title: Device for treatment of heart valve calcification and vascular calcification and method for using same
Inventor: ZHANG YI
IPC: A61B17/22
Filed: 2019-08-02
Abstract: Provided are a device (1, 4, 5) for the treatment of heart valve calcification and vascular calcification and a method for using same. The device (1, 4, 5) comprises: a shock wave transmitter (10, 40) for receiving a voltage/current pulse in order to generate a shock wave; a balloon (12, 42) connected to one end of the shock wave transmitter (10, 40) in a sealed manner so that an electrolyte liquid for shock wave conduction circulates inside the shock wave transmitter (10, 40) and the balloon (12, 42); and a developing member (14, 44) located on the shock wave transmitter (10, 40) and/or the balloon (12, 42). In this way, the device can use shove waves to soften a calcified site to undertake rapid and effective treatment of the calcified site.
Patent WO-2020232914-A1 (WO)
Inventor: ZHOU LIANQUN
IPC: H03H9/15
Filed: 2019-09-10
Abstract: A thin film piezoelectric sonic sensor, comprising: a substrate layer (2), a ground electrode layer (3), and a piezoelectric layer (4) which are stacked. At least one transducer (5) is provided on the side of the piezoelectric layer (4) distant from the ground electrode layer (3); phononic crystals (1) at least formed in the piezoelectric layer (4) are correspondingly provided on the two sides of the transducer (5), and the resonant frequency of the thin film piezoelectric sonic sensor is located in a band gap of the phononic crystals (1). According to the thin film piezoelectric sonic sensor, the phononic crystals (1) are at least provided on the piezoelectric layer (4), the mechanical vibration stability of the piezoelectric layer (4) is improved, the sonic wave reflectivity is improved, the energy loss of sonic wave transmission is lowered, and the quality factor of the sensor is improved. A phononic crystal (1) comprises a matrix and a scatterer formed on the matrix; the matrix is formed by at least two stacked dielectric layers; materials of any one of the dielectric layers are different from those of other dielectric layers. The phononic crystal (1) can effectively reduce the sonic wave energy loss, and effectively improve the quality factor of the sensor when the phononic crystal is applied to the thin film piezoelectric sonic sensor.
Patent WO-2021046751-A1 (WO)
Title: Touch apparatus, electronic device, and driving method
Inventor: FENG YILIN
IPC: G06F3/044
Filed: 2019-09-11
Abstract: A touch apparatus, an electronic device and a driving method. The touch apparatus comprises: a plurality of touch sensors arranged in an array; a plurality of touch lines connected to the plurality of touch sensors; and a controller connected to the plurality of touch lines, the controller being configured to simultaneously send, by means of the plurality of touch lines, a plurality of first touch signals to the plurality of touch sensors, respectively, and simultaneously receive, by means of the plurality of touch lines, a plurality of second touch signals generated by the plurality of touch sensors. The touch apparatus is able to implement synchronous scanning and frequency division multiplexing, reducing debugging period and cost, and moreover, first touch signals are all simultaneously applied to a plurality of touch lines, so that the levels between adjacent touch lines are similar, being able to reduce the value of the parasitic capacitance between adjacent touch lines, thereby being able to further improve the touch precision, and facilitating the driving of a longer touch line.
Patent WO-2020057460-A1 (WO)
Inventor: YANG CHENG
IPC: B60G11/26
Filed: 2019-09-16
Abstract: A port logistics vehicle. The port logistics vehicle comprises a vehicle frame (1), a set of axles (2), a set of wheels (4) mounted on the axles (2), and a vehicle suspension system (3) provided between the vehicle frame (1) and each axle (2); the vehicle suspension system (3) comprises mutually symmetrical suspensions (10), and the suspension (10) is an oil-gas spring suspension, so that vehicle suspension system (3) has a low dynamic load coefficient and a small jump degree, and the wheels are promoted to have a good grounding property. Furthermore, the response speed of the vehicle suspension system (3) is high, forward horizontal inertia during braking can be converted into downward pressing force in a short time, and thus the braking distance of the port logistics vehicle is effectively shortened.
Patent WO-2021056215-A1 (WO)
Title: 运动估计方法、系统和存储介质
Inventor: MA SIWEI
IPC: H04N19/51
Filed: 2019-09-24
Abstract: 一种运动估计方法、系统和存储介质，所述方法包括：对于当前帧中的仿射编码单元，从至少四种运动矢量精度中选择一种以在参考帧中进行运动估计，从而确定所述仿射编码单元的控制点的运动矢量（S110）；将所述仿射编码单元划分为若干个子单元（S120）；根据所述控制点的运动矢量计算所述仿射编码单元中的所述子单元的运动矢量（S130）。该运动估计方法、系统和存储介质使仿射模式下的运动矢量精度与常规模式下的运动矢量精度的设计相统一，提高了编码性能。
Patent WO-2021022643-A1 (WO)
Inventor: JIANG HAO
IPC: G06K9/00
Filed: 2019-09-26
Abstract: Disclosed in embodiments of the present invention are a method and apparatus for detecting and tracking a target in videos. The method comprises: when full image target detection is performed on a current video image frame, combining a detection result of a last video image frame with the detection result of the current video image frame, and by using a full image-local alternate detection mode, continuing to carry out local target detection after the full image target detection, so that a relationship between the two video image frames is taken into consideration, and the detection precision of the target detection is improved. Because target detection is carried out on multiple video image frames on the basis of a full image target detection model and a local target detection model, a newly appearing target can be detected from the video frames; moreover, a correspondence of the same target between the last video image frame and the current video image frame, and a successfully matching target between the last video image frame and the current video image frame are obtained, and therefore, a newly appearing target can be tracked.
Patent WO-2020082983-A1 (WO)
Inventor: NIE ZHEN
IPC: G02B6/44
Filed: 2019-09-27
Abstract: An all-dielectric, flexible fiber-optic access cable, comprising: a loose tube (3); two glass fiber reinforced plastic rods (4) arranged at two sides of the loose tube (3) respectively; an optical fiber (1) located in the loose tube (3); a fiber paste (2) filling a space between the loose tube (3) and the optical fiber (1); and a sheath (7) wrapped around the loose tube (3) and the glass fiber reinforced plastic rods (4). The diameter of the glass fiber reinforced plastic rod (4) is greater than the diameter of the loose tube (3). When the all-dielectric, flexible fiber-optic access cable receives radial pressure, the glass fiber reinforced plastic rods (4) will bear the pressure before the loose tube (3) does, thereby effectively protecting the optical fiber (1) located in the loose tube (3), and improving the resistance of the fiber-optic cable to lateral pressure.
Patent WO-2020063866-A1 (WO)
Inventor: CHEN XU
IPC: H04N5/00
Filed: 2019-09-27
Abstract: A system and method for traffic monitoring and evidence collection. The system can include a housing(130,330,630,730) configured to be mounted on top of a vehicle; a police light(112a,112b,312a,312b); a terminal(420) located outside the housing(130,330,630,730)and configured to send a control signal; and one or more image capturing cameras(318a~318e,618a~618g,718a~718h) configured to capture an image in response to the control signal from the terminal(420), wherein the one or more image capturing cameras(318a~318e,618a~618g,718a~718h,) are located within the housing(130,330,630,730).
Patent WO-2020206959-A1 (WO)
Title: 一种高空穴迁移率晶体管(hhmt)及其制造方法
Inventor: LI ZILAN
IPC: H01L29/775
Filed: 2019-09-30
Abstract: 一种高空穴迁移率晶体管（HHMT 100），包括：垂直界面（121）；沟道层（106），其设置在垂直界面（121）之外；沟道提供层（107），其设置在沟道层（106）之外，沟道层（106）中邻近沟道层（106）与沟道提供层（107）的界面形成垂直的二维空穴气2DHG；第一电极（111），其经配置能够与垂直的二维空穴气2DHG电连接；第二电极（113），其经配置能够与垂直的二维空穴气2DHG电连接；以及栅电极（112），其设置在沟道提供层（107）之外。还涉及一种高空穴迁移率晶体管（HHMT100）的制造方法，包括：形成垂直界面（121）；在垂直界面（121）之外形成沟道层（106）；在沟道层（106）之外形成沟道提供层（107），其中沟道层（106）中邻近沟道层（106）与沟道提供层（107）的界面形成垂直的二维空穴气2DHG；以及形成与二维空穴气2DHG电接触的第一电极（111）和第二电极（113）以及肖特基接触的栅电极（113）。
Patent WO-2020073995-A1 (WO)
Inventor: LI HUIHUI
IPC: G11C11/16
Filed: 2019-10-11
Abstract: Disclosed is a magnetic random access memory, comprising: a substrate (10); multiple driver sets sequentially arranged in the direction away from the substrate (10) and on the surface of the substrate (10), wherein each driver set comprises one or more drivers (200) arranged at intervals in a first direction, the distance from the center of each driver (200) of one driver set to the substrate (10) is the same, the projection of the at least one driver (200) of each driver set on the substrate (10) overlaps the projection of the at least one driver (200) of an adjacent driver set on the surface of the substrate (10), and the first direction is perpendicular to a thickness direction of the substrate (10); and multiple MTJ bit cells (60) located on the side, away from the substrate (10), of the top driver set and arranged at intervals in the first direction, one or more of the MTJ bit cells (60) being correspondingly electrically connected to one or more drivers (200). The magnetic random access memory has a large storage density.
Patent WO-2021068223-A1 (WO)
Inventor: ZHANG JUNFENG
IPC: H04W74/08
Filed: 2019-10-12
Abstract: L'invention concerne procédé de communication sans fil, consistant à : transmettre, par un dispositif utilisateur, un premier message à un dispositif de réseau dans un réseau sans fil pour initier un accès aléatoire en deux étapes au réseau sans fil ; et recevoir, en réponse au premier message, un second message pour exécuter l'accès aléatoire en deux étapes, le second message comprenant un champ indiquant si une taille de bloc de transport d'une charge utile du second message est mise à l'échelle.
Patent WO-2020078363-A1 (WO)
Title: Drive circuit of lamp and method for operating drive circuit of lamp
Inventor: HE DENGFENG
IPC: H05B44/00
Filed: 2019-10-16
Abstract: Provided are a drive circuit (10) of a lamp and a method for operating the drive circuit (10) of the lamp. The lamp comprises a lighting unit (150), and a first and second pair of connection pins (110, 112) for coupling the drive circuit (10) to a power supply device. The drive circuit (10) comprises a preheat detection circuit (160) and a protection circuit (140). The preheat measurement circuit (160) is coupled to the first pair of connection pins (110) and is used for measuring the voltage between the first pair of connecting pins (110) and outputting a reference voltage. The protection circuit (140) comprises a switching circuit (144) connected in series with the lighting unit (150); the protection circuit (140) is used for comparing the reference voltage and the input voltage of the lamp; if the input voltage of the lamp is greater than the reference voltage, the switching circuit (144) is turned on and causes the lighting unit (150) emit light.
Patent WO-2020083334-A1 (WO)
Title: 一种拉环式面膜包装袋
Inventor: DU LILI
IPC: B65D81/32
Filed: 2019-10-24
Abstract: 一种拉环式面膜包装袋，包括第一存储袋体（1）、第二存储袋体（2）；位于第一存储袋体（1）上的第一拉环（3）、位于所述第二存储袋体（2）上的第二拉环（4）；位于第一存储袋体（1）和第二存储袋体（2）之间的薄膜（5）；薄膜（5）将拉环式面膜包装袋分隔为独立密封的第一存储袋体（1）、第二存储袋体（2）；其中，第一存储袋体（1）用于存放含有精华成分的面膜；第二存储袋体（2）用于存放面膜水；位于拉环式面膜包装袋边沿的一个或者多个撕裂口（6）。通过对面膜包装袋进行分割设计，将含精华成分的面膜与面膜水分开存放，在用户使用时再将两者进行混合，这样更加卫生安全，且面膜的保存效果更好。
Patent WO-2020083381-A1 (WO)
Inventor: XU ZHIWEI
IPC: G06F17/00
Filed: 2019-10-25
Abstract: Disclosed are a database table area segmentation method and apparatus, and a storage medium, belonging to the technical field of databases. The method comprises: determining a first data amount of a database table within a first time period and a second data amount within a second time period, the first time period and the second time period being before a target time period corresponding to data to be stored; calling a target network model, inputting the first data amount and the second data amount into the target network model, and outputting a third data amount within the target time period, the target network model being used for predicting a data amount of a next time period on the basis of data amounts of a previous time period and a current time period; on the basis of the third data amount within the target time period, determining a number of target areas; on the basis of the number of target areas, segmenting areas in the database table used for storing the data to be stored. The present invention avoids the problem of necessary data migration caused by uneven data distribution, and thereby improves data storage performance.
Patent WO-2021081715-A1 (WO)
Inventor: YU YAWEI
IPC: H04L29/08
Filed: 2019-10-28
Abstract: The present invention relates to the technical field of communications, and more particularly, relates to the field of machine type communications (MTC) or Narrow Band-Internet of Things (NB-IoT). Provided are a communication method and device. The communication method of the present invention comprises: a network apparatus generating a downlink reference signal sequence, the downlink reference signal sequence indicating whether at least one terminal apparatus is to be activated within an on-duration time; the network apparatus sending the downlink reference signal sequence to the at least one terminal apparatus, the at least one terminal apparatus comprising a first terminal apparatus; and the first terminal apparatus determining whether to activate itself within the on duration time according to the indication in the downlink reference signal sequence. Using a downlink reference sequence, such as a channel state information reference signal (CSI-RS) sequence, to indicate whether at least one terminal apparatus is to be activated within an on duration time realizes multiplexing of information, reduces signaling while reducing power consumption of the terminal apparatus, and improves communication efficiency.
Patent WO-2020108205-A1 (WO)
Inventor: SHEN NAIYU
IPC: F25D23/02
Filed: 2019-10-29
Abstract: A refrigerator comprises a compartment (100) and a door (200). A door opening/closing assembly is connected between the compartment (100) and the door (200). The door opening/closing assembly comprises a curved ejector bar (300) and a driving assembly (400). The curved ejector bar (300) has an outer end slidably connected to the door (200) and an inner end extending into the compartment (100). A rotation axis (330) of the curved ejector bar (300) is parallel to but not colinear with a hinge shaft of the door (200). The driving assembly (400) can drive the curved ejector bar (300) to rotate around the rotation axis (330) thereof. When the curved ejector bar (300) rotates through a first angle, the door (200) is driven to rotate through a second angle. The second angle is greater than the first angle. The refrigerator realizes automatic opening and closing of a door at large angles.
Patent WO-2021017226-A1 (WO)
Inventor: JIANG QIAN
IPC: H01L27/32
Filed: 2019-10-30
Abstract: 一种显示面板（100）及其制备方法，本显示面板（100）在像素定义层（15）上形成有机发光结构层（16）和封装结构层（17），有机发光结构层（16）和封装结构层（17）包覆通孔（21）的整个表面。该方法先形成通孔（21），再在通孔（21）的表面包覆有机发光结构层（16）和封装结构层（17），使得封装结构层（17）包覆通孔（21）的周侧，避免水汽沿着开孔断面的膜层之间的间隙侵蚀显示区的金属层。
Patent WO-2021056690-A1 (WO)
Inventor: ZHU SHAN
IPC: H02J7/00
Filed: 2019-11-05
Abstract: A method for cathode protection during a battery cycle, comprising the following steps: obtaining a cathodic polarization resistance of a battery at different states of charge during an n-th charge and discharge cycle (S1); obtaining a cathodic open-circuit voltage of the battery at different states of charge, and a cathodic limit potential of the battery (S2); and calculating, according to the cathodic open-circuit voltage, the cathodic limit potential and the cathodic polarization resistance, the maximum charge current of the battery at different states of charge during the n-th charge and discharge cycle (S3). A device for cathode protection and a storage medium are used to implement the method for cathode protection, and can provide a reference limit current during battery charging.
Patent WO-2021082046-A1 (WO)
Inventor: HUANG DONGCHEN
IPC: G02F1/153
Filed: 2019-11-08
Abstract: 本发明公开了一种显示面板及显示装置，显示面板包括阵列基板，以及设置于阵列基板上的彩膜基板，其中彩膜基板上设置有光致变色玻璃层，且当紫外激光照射至光致变色玻璃层时产生一变色区域，以对经过变色区域的光线产生滤光作用，显示面板还包括散射粒子，分布于光致变色玻璃层上。
Patent WO-2021008029-A1 (WO)
Inventor: Hu Pengqiang
IPC: G06F11/14
Filed: 2019-11-12
Abstract: The present application relates to the technical field of research and development management. Disclosed is a case execution method, comprising: obtaining the execution status of a case by querying information about the case of a device, to determine the execution state of the case; querying, according to the execution state, a corresponding failure cause; obtaining a node position where the case having an execution failure is located; generating a case execution log on the basis of the obtained information; and selecting execution control, e.g., selecting to continue the execution or restart an execution, for the case on the basis of the information recorded in the case execution log. Also disclosed are a case execution apparatus and device, and a computer readable storage medium. According to the present application, an automatic restart operation for the case is performed on the basis of the node position and context data, thereby reducing the difficult of the system in case execution control, and also implementing execution continuing control when the case execution fails; moreover, continuing the execution not only reduces the execution control time of the case, but also improves the success rate of the case execution.
Patent WO-2021097812-A1 (WO)
Inventor: LIU LIHENG
IPC: H01L27/11568
Filed: 2019-11-22
Abstract: A semiconductor device includes a metal layer and a spacer arranged adjacent to the metal layer. The spacer includes a composite-dielectric layer including a composite-dielectric material. A composition of the composite-dielectric material is a mixture of a composition of a first dielectric material and a composition of a second dielectric material different from the first dielectric material.
Patent WO-2020233072-A1 (WO)
Title: 一种具有裂纹的地板及其制备方法
Inventor: DAI HUIBIN
IPC: B44C3/02
Filed: 2019-11-29
Abstract: 本发明公开了一种具有裂纹的地板及其制备方法，包括基材层,基材层上附有图案层,图案层上设有裂漆层,裂漆层上具有裂纹或裂缝。该具有裂纹的地板可丰富地板图案、增强视觉冲击力。
Patent WO-2021103072-A1 (WO)
Title: 扬声器及音频设备
Inventor: XIAO BO
IPC: H04R9/06
Filed: 2019-12-04
Abstract: 本申请提供了一种扬声器及音频设备，扬声器包括后盖、音膜、盆架、振动系统及磁路系统，振动系统包括振膜，磁路系统包括磁碗，振膜、磁碗及盆架围合形成内腔，后盖位于磁碗的背向振膜的一侧，并与磁碗围合形成后腔，后腔连通于内腔；后盖包括与磁碗相对设置的顶壁，以及连接于顶壁四周并与盆架连接的侧壁，侧壁上设有第一通孔，音膜固定于后盖并盖封第一通孔。如此，振膜振动使内腔中空气的压缩能够影响到后腔内空气的流动，后腔空气的变化会引起音膜的振动，从而加大后腔的体积，使Fo下降，提高扬声器的低频灵敏度、有效减少功耗；将音膜设在侧壁，使顶壁可用于与音频设备的机壳软接触配合，有效降低扬声器振动导致的机壳振动的风险。
Patent WO-2020192183-A1 (WO)
Title: Component separation device
Inventor: LIU ZHONGYING
IPC: A61M1/38
Filed: 2019-12-12
Abstract: A component separation device, comprising an annular separation channel (1), the annular separation channel (1) having an inlet end (2) and an outlet end (3); the inlet end (2) is configured to input, into the annular separation channel (1), a raw material to be separated; the annular separation channel (1) is configured to be able to rotate around the center, and generate a centrifugal force by means of rotation, so that components having different specific weights in the raw material to be separated are separated under the action of the centrifugal force, and are layered according to the different specific weights, so as to form different component layers; the outlet end (3) is provided with extraction ports (301), each of which is positioned at a middle position corresponding to the respective component layer, each extraction port (301) being used to output the corresponding component layer respectively; and a segment of the annular separation channel (1) close to the outlet end (3) is gradually widened in size. One technical effect of the device is that the device can be used to perform relatively accurate separation and extraction on components having different specific weights in the raw material to be separated.
Patent WO-2020119804-A1 (WO)
Inventor: Wen Zengkui
IPC: G06F8/34
Filed: 2019-12-13
Abstract: 一种页面视图的显示方法、装置、设备及存储介质，该方法包括：获取当前页面的待显示视图对应的业务数据和数据模型，并根据业务数据和数据模型生成待显示视图对应的视图渲染数据，发送视图渲染数据；根据视图渲染数据进行视图渲染和显示。通过该方法，可以对开发架构中控制器和视图进行解耦，简化控制器，并且使得开发框架中每个模块的职责定义更加清晰，提高页面视图的显示效率。