baber/WOPTO huggingface dataset:
Patent WO-2022051943-A1 (WO)
Title: Display apparatus
Inventor: LUO YONGHUI
IPC: H01L27/32
Filed: 2020-09-09
Abstract: A display apparatus is provided. The display apparatus includes a display panel having a display portion (DP), a connecting portion (CP), and a bending portion (PBP); a polarizer (PL) on a first side (S1) of the display portion (DP); a cover window (CF) on the first side (S1) of the display portion (DP), and on a side of the polarizer (PL) away from the display portion (DP); a coating layer (MCL) having a main portion (Pm), and a tapered purport (Pt) extending from the main portion (Pm) toward the polarizer (PL); and an optically clear adhesive layer (OCA) on the first side (S1) of the display portion (DP), and between the polarizer (PL) and the cover window (CF). The optically clear adhesive layer (OCA) has a first adhering surface (Sa1) at least partially attaching to the cover window (CF), a second adhering surface (Sa2) at least partially attaching to the polarizer (PL), and an edge (Eoca) connecting the first adhering surface (Sa1) and the second adhering surface (Sa2) and adjacent to the tapered portion (Pt).
Patent WO-2021052232-A1 (WO)
Title: Time-lapse photography method and device
Inventor: YANG FASHENG
IPC: H04N5/232
Filed: 2020-09-10
Abstract: Provided in the embodiments of the present application are a time-lapse photography method and device, relating to the technical field of photography, and being capable of automatically identifying photography scenes, photographing multiple pictures with good effects on the basis of target photography parameters matching the photography scene, and performing video encoding on the multiple pictures to thereby generate a time-lapse photography video with good effects. The specific solution is: after an electronic device detects a first operation, starting a camera; after detecting a second operation, entering a time-lapse photography mode, and displaying a preview interface, the preview interface comprising a first preview image; on the basis of the first preview image, recognising a photography scene and, on the basis of the photography scene, determining target photography parameters; after detecting a third operation of the user instructing photography to start, photographing multiple target pictures on the basis of the target photography parameters; displaying a photography interface; and, after detecting a fourth operation of the user instructing photography to stop, generating a time-lapse photography video on the basis of the multiple target pictures. The embodiments of the present application are used for time-lapse photography.
Patent WO-2022056696-A1 (WO)
Title: Camptothecin drug and antibody conjugate thereof
Inventor: ZHU YI
IPC: C07D491/22
Filed: 2020-09-15
Abstract: A camptothecin drug and an antibody conjugate thereof; on the basis of a comprehensive understanding of ADC drugs, the inventor has designed a series of anti-tumour Exatecan active derivatives and has found through experimentation that the newly designed anti-tumour molecular compounds show good anti-tumour activity in experiments.
Patent WO-2021128993-A1 (WO)
Inventor: SONG YIWEI
IPC: H04R3/00
Filed: 2020-09-21
Abstract: 本实用新型提供一种放大电路和播放设备，包括：N阶滤波器、比较器、数字电路；原始声频信号经过N阶所述滤波器之后，得到滤波信号；所述滤波信号经过所述比较器、所述数字电路后输出相应的数字信号；其中，所述N阶滤波器中采用的运算放大器的数量小于N，N为大于1的自然数。本实用新型的放大电路，在保证滤波效果的前提下，通过减少N阶滤波器中使用的运算放大器的数量来降低放大电路所占用的电路面积和功耗。
Patent WO-2021057704-A1 (WO)
Inventor: LAM PAK KIT
IPC: H04N21/235
Filed: 2020-09-22
Abstract: La présente invention concerne l'incorporation d'un objet dans des images vidéo, en particulier l'incorporation de supports publicitaires dans les images vidéo. Un procédé donné à titre d'exemple comprend, sur un dispositif informatique ayant une mémoire : la réception d'images vidéo comprenant une ou plusieurs scènes ; l'identification du fait que l'une des une ou plusieurs scènes correspond à une ou plusieurs scènes prédéterminées ; si l'une des une ou plusieurs scènes est identifiée comme correspondant à une ou plusieurs scènes prédéterminées : la récupération d'une image prédéterminée associée à la scène identifiée dans la mémoire ; le redimensionnement de l'image prédéterminée sur la base d'une première échelle prédéterminée ; l'incorporation de l'image prédéterminée dans la scène identifiée.
Patent WO-2021196539-A1 (WO)
Title: 一种微波加热合成高质量无机膜的方法
Inventor: LI LIANGQING
IPC: B01J19/12
Filed: 2020-09-22
Abstract: 一种微波加热合成无机膜的方法，预先将基质和合成液加入微波反应器中，随后将合成液反应初始温度到目标温度分成多段温度区间，每段温度区间设置一个升温速率，然后经过多段温度区间到达目标温度，并在目标温度下反应一段时间，最终经过洗涤、干燥处理后得到无机膜。
Patent WO-2021063323-A1 (WO)
Inventor: LIU KUN
IPC: H04W74/00
Filed: 2020-09-28
Abstract: 本申请提出随机接入方法、装置、第一通信节点和第二通信节点，该随机接入方法应用于第一通信节点，包括：发送第一定时提前量信息以及第一定时提前量信息对应的第一前导码信息到第二通信节点。
Patent WO-2021208386-A1 (WO)
Inventor: QIN YAN
IPC: F04C18/02
Filed: 2020-10-16
Abstract: A scroll compressor, comprising: a compression mechanism, the compression mechanism comprising a fixed scroll (2) and a movable scroll (3), and the movable scroll (3) being configured to be able to orbit relative to the fixed scroll (2) to compress a working fluid; a housing (1), the housing (1) defining an internal space for accommodating the compression mechanism; a main bearing seat (5), the main bearing seat (5) being fixed to the housing (1) and supporting the movable scroll (3); and an axial flexible installation mechanism, the fixed scroll (2) being connected to the main bearing seat (5) by means of the axial flexible installation mechanism to enable the fixed scroll (2) to move a predetermined distance in the axial direction. The axial flexible installation mechanism comprises: a fastener (17; 27; 37; 47; 57; 67) having a head (171; 271; 371; 571; 671), a sleeve (19; 29; 39; 59; 69) provided on the outer periphery of the fastener (17; 27; 37; 47; 57; 67), and a backing plate part (18; 28; 38; 48; 58; 68) disposed at least partially between the head (171; 271; 371; 571; 671) of the fastener (17; 27; 37; 47; 57; 67) and the sleeve (19; 29; 39; 59; 69) in the axial direction; the backing plate part (18; 28; 38; 48; 58; 68) can be joined with the housing (1); and the housing (1) can provide radial support for the backing plate part (18; 28; 38; 48; 58; 68). The compressor lowers both the sliding risk of the sleeve and the risk of failure of the bolt and the main bearing seat caused by ruptures.
Patent WO-2021115071-A1 (WO)
Inventor: LIAO XIANGYUN
IPC: G06T7/55
Filed: 2020-11-17
Abstract: A three-dimensional reconstruction method for a monocular endoscope image. The method comprises: acquiring a plurality of distorted images, photographed by a monocular endoscope, of a checkerboard calibration target, and performing distortion correction on the plurality of distorted images of the checkerboard calibration target to obtain an image sequence (S101); determining a key frame from the image sequence (S102); acquiring a pose parameter of the key frame, and estimating a depth map of the key frame (S103); and performing image reconstruction on the basis of the pose parameter of the key frame and the depth map of the key frame to obtain a three-dimensional point cloud (S104). Further provided are a three-dimensional reconstruction apparatus (300) for a monocular endoscope image, and a terminal device (400). An error caused by imaging distortion of a monocular endoscope is reduced, and the display effect of an image is also improved.
Patent WO-2022109892-A1 (WO)
Inventor: LU YONGJIE
IPC: C02F9/10
Filed: 2020-11-26
Abstract: La présente invention concerne un procédé de traitement des eaux usées sans rejet, comprenant les étapes suivantes : S1, l'introduction des eaux usées dans un filtre multicouche pour la filtration ; S2, l'introduction de l'eau filtrée par le filtre multicouche dans un dispositif d'ultrafiltration pour l'ultrafiltration ; S3, l'introduction de l'eau ayant subi une ultrafiltration dans un dispositif d'osmose inverse pour l'osmose inverse afin de former de l'eau pure utilisable qui peut traverser une membrane d'osmose inverse et de l'eau concentrée qui ne peut pas traverser la membrane d'osmose inverse ; S4, le recyclage de l'eau pure obtenue après l'osmose inverse, et l'introduction de l'eau concentrée dans une unité d'oxydation électrochimique pour un traitement électrochimique ; et S5, l'introduction de l'eau ayant subi le traitement électrochimique dans un cristalliseur par évaporation pour une cristallisation par évaporation. Selon la présente invention, un procédé électrochimique est utilisé avant la cristallisation par évaporation pour le traitement, et un champ électrique alternatif à basse tension est formé dans l'eau, de sorte que les ions dans l'eau migrent de manière répétée, et la viscosité de l'eau est réduite ; l'eau est décolorée par les radicaux hydroxyles générés dans une zone anodique, et ainsi, la blancheur d'un sel formé par cristallisation est améliorée ; les déchets sont transformés en ressources.
Patent WO-2021115167-A1 (WO)
Inventor: CHEN BIN
IPC: B64C13/20
Filed: 2020-12-02
Abstract: A determination apparatus, comprising a circuit. The circuit is configured to: acquire first illuminance measured, in a first time period, by an illumination sensor (500) comprised in a flight body; acquire at least one first variation of the attitude, the velocity and the acceleration of the flight body in the first time period; determine whether the at least one first variation is less than a preset variation; and when the at least one first variation is less than the preset variation, determine the first illuminance to be illuminance measured in the first time period. By means of the technical solution, during the flight process of a flight body comprising the illumination sensor (500), when illuminance is measured by the illumination sensor (500), the influence generated when the illuminance measured by the illumination sensor (500) deviates because of change in the attitude of the illumination sensor (500) can be suppressed.
Patent WO-2021258647-A1 (WO)
Inventor: YANG QIN
IPC: F22B37/22
Filed: 2020-12-02
Abstract: A natural circulation box structure for a ferrosilicon waste heat boiler, with the box structure being composed of a box body (1), a top collection box (2), a communicating pipe (3), an upper collection box (4), a top sealing shell (5), a lower collection box (6), a bottom collection box (7), an ash hopper (8), a pipe bundle (9), and an access door (10), wherein the box body (1) is vertically arranged and adopts a modular structure; the pipe bundle (9) is in an in-line arrangement in the box body (1), and the pipe bundle (9) is welded and connected to the upper collection box (4) and the lower collection box (6); and the upper collection box (4) is connected to the top collection box (2) via the communicating pipe (3), and the lower collection box (6) is welded and connected to the bottom collection box (7). The natural circulation box structure for a ferrosilicon waste heat boiler is of a box-body-type structure, which is very convenient for on-site assembly and greatly shortens the installation period. In addition, the boiler relies on natural circulation instead of the traditional method, i.e. relying on a circulating pump, which greatly reduces the production cost and operation cost of the boiler and also reduces the difficulty of operation by workers, thereby fully achieving the purposes of energy conservation, consumption reduction and cost reduction.
Patent WO-2022120878-A1 (WO)
Inventor: CHEN LINXING
IPC: C01B13/11
Filed: 2020-12-14
Abstract: 一种内置式臭氧发生器，包括装置主体(1)，所述装置主体(1)前表面设置有过滤网(2)，所述装置主体(1)前表面固定连接有固定块(3)，所述过滤网(2)顶端表面开设有卡槽(4)，所述固定块(3)一端贯穿卡槽(4)处于过滤网(2)前表面，所述固定块(3)一端开设有限位槽(5)，所述限位槽(5)内部固定连接有弹簧(7)，所述弹簧(7)另一端固定连接有活动块(6)，所述活动块(6)一端处于固定块(3)的一侧外表面。该臭氧发生器通过设置的过滤网(2)，能够对装置主体(1)前表面的散热口进行防护，避免散热口堆积灰尘不便清理，或有异物从散热口被吸入装置主体(1)内部，导致臭氧发生器损坏。
Patent WO-2021135938-A1 (WO)
Inventor: LI ANHU
IPC: A61K31/437
Filed: 2020-12-16
Abstract: 本发明涉及了一类如式(I)所示的杂环亚砜亚胺化合物、其消旋体、对映异构体、药学上可接受的盐或溶剂合物，同时还公开了用于合成该化合物的中间体化合物及其制备方法，以及包含该化合物的药物组合物及其应用。该化合物是RET、RET突变体或RET融合蛋白抑制剂，可用于治疗因RET、RET突变体或RET融合蛋白异常活性所引起的疾病，例如肿瘤等。
Patent WO-2023272409-A1 (WO)
Title: Elastic potential energy engine
Inventor: YU YONGHAI
IPC: F03G7/00
Filed: 2021-07-02
Abstract: An elastic potential energy engine, comprising: an air supply system consisting of an electric motor, an air pump and an automatic control system of the electric motor; and a potential-energy elastic-force pressurization transmitter consisting of an engine body, a pressure measuring valve provided at an air inlet, a compressed air bag, an elastic-force output pressurization ejector rod, an elastic-force oil-pressure transmission chamber and an elastic-force oil-pressure output port. A power supply of a storage battery supplies power to the electric motor of the air supply system to provide pressure gas, the gas input by the air supply system is stored in the compressed air bag by the potential-energy elastic-force pressurization transmitter to generate elastic potential energy, and the elastic force is then pressurized by the elastic-force output pressurization ejector rod, and is transmitted to an elastic-force oil-pressure chamber of a potential energy engine assembly by means of the elastic-force oil-pressure transmission chamber and the elastic-force oil-pressure output port. With the elastic potential energy engine, the pressure is increased several times using the method of increasing the pressure by using Pascal's principle, thereby saving the energy of a power source, achieving a long maintaining time for the acting force and a small energy consumption, and effectively reducing environmental pollution.
Patent WO-2022011994-A1 (WO)
Inventor: LI HUAYU
IPC: F01K7/02
Filed: 2021-07-08
Abstract: A second-type single working medium combined cycle, belonging to the technical field of thermodynamics and heat pumps. The second-type single working medium combined cycle refers to a closed process consisting of fifteen processes performed separately or jointly by M 1  kg, M 2  kg and H kg of working mediums, i.e. M 1  kg of a working medium boosting process 12, M 1  kg of a working medium endothermic vaporization process 2r, M 1  kg of a working medium depressurization process rs, M 1  kg of a working medium endothermic process s3, H kg of a working medium boosting process 1g, H kg of a working medium and M 3  kg of a working medium mixing endothermic process g8, M 2  kg of a working medium boosting process 83, M 3  kg of a working medium endothermic process 34, M 3  kg of a working medium boosting process 45, M 3  kg of a working medium exothermic process 56, M 3  kg of a working medium depressurization process 67, M 3  kg of a working medium exothermic process 7j, M 3  kg of a working medium and H kg of a working medium mixing exothermic process j8, (M 1 +H) kg of a working medium depressurization process 89, and (M 1 +H) kg of a working medium exothermic and condensation process 91; and M 3  is the sum of M 1  and M 2 .
Patent WO-2022147637-A1 (WO)
Title: 显示装置
Inventor: JI YAQIAN
IPC: H04R1/02
Filed: 2021-01-05
Abstract: 本公开提供一种显示装置，包括显示面板、箱体、连接框体和设置于所述显示面板上的振动激励器，其中，所述连接框体包括：框形件，包括相对的第一端面和第二端面，所述第一端面与所述箱体的顶面贴合，所述第二端面上设置有多个凸起部，多个所述凸起部远离所述第一端面的表面形成为支撑面，所述显示面板固定于所述支撑面上；连接件，与所述框形件固定连接，且所述连接件与所述箱体之间通过锁固件可拆卸连接。
Patent WO-2022151262-A1 (WO)
Inventor: LI XIANGYU
IPC: H04W72/04
Filed: 2021-01-14
Abstract: 本申请提供了一种DRX配置方法、通信装置和通信系统。该方法包括：基于第一目标包括的多个QoS流对应的多组QoS参数，确定目标QoS参数；基于第一映射关系和目标QoS参数，确定目标DRX配置，该第一映射关系可用于指示QoS参数与DRX配置的对应关系，该目标DRX配置可对应于第一目标；基于该目标DRX配置进行侧行链路通信。其中，第一目标包括：一个目标地址、多个目标地址或终端设备。也即，多个QoS流可以基于相同的目标DRX配置进行侧行链路通信。用于确定目标DRX配置的目标QoS参数是根据多组QoS参数确定的，兼顾了QoS需求。因此，可以在QoS表现和节能省电之间获得平衡。
Patent WO-2021143897-A1 (WO)
Title: Parameter information determination method, communication node, and storage medium
Inventor: ZHANG SHUJUAN
IPC: H04L5/00
Filed: 2021-01-18
Abstract: Disclosed are a parameter information determination method, a communication node, and a storage medium. The parameter information determination method comprises: acquiring first parameters of a first type of elements according to second parameters of a second type of elements, wherein the number of the first parameters of the first type of elements is N, the number of the second parameters of the second type of elements is M, and M and N are both positive integers greater than or equal to 1; and the elements comprise one of the following: channels, signals, and one item in a mapping table.
Patent WO-2021227552-A1 (WO)
Title: Multifunctional data reorganization network
Inventor: XIA TIAN
IPC: G06F15/173
Filed: 2021-01-21
Abstract: Provided is a multifunctional data reorganization network, comprising a binary switching unit and a recursive shuffling network (RSN); both said binary switching unit and said recursive shuffling network (RSN) can perform two-way transmission of data; the data reorganization network completes data reorganization by means of controlling the direction of transmission of a signal in a network. The network can be used as a data transmission path between a storage unit and a computing unit, completing multiple data reorganization functions at the same time as data transmission, thereby flexibly adjusting the structure of irregular data, improving the data transmission efficiency and calculation efficiency of irregular calculation.
Patent WO-2022041651-A1 (WO)
Inventor: JIN LILI
IPC: H04W72/04
Filed: 2021-01-28
Abstract: Embodiments of the present application provide an information transmission method and apparatus, applied to the field of communications, particularly the field of short-range communications, such as onboard wireless communication systems. The method comprises: a first node receives a first MCS index value from a second node, the first MCS index value corresponding to a first modulation mode; according to the first MCS index value, the first node receives data from the second node or sends data to the second node, wherein a first MCS information subset where the first MCS index value is located belongs to a predefined MCS information set comprising 32 MCS information subsets. The embodiments of the present application can improve the flexibility of modulation mode selection and improve data transmission efficiency and reliability. The solution can further be used for improving the capability of self-driving or an advanced driving assistance system (ADAS), and can be applied to the Internet of vehicles such as vehicle-to-everything (V2X), long-term evolution-vehicle (LTE-V), and vehicle-to-vehicle (V2V).
Patent WO-2022141726-A1 (WO)
Inventor: SONG AIGUO
IPC: B25J15/00
Filed: 2021-01-29
Abstract: A rope transmission finger force feedback device having two degrees of freedom, comprising a hand support mechanism (1), a thumb movement mechanism, an index finger movement mechanism and a handle mechanism. The hand support mechanism (1) comprises a motor (10), a motor shaft sleeve (11), a slide rail (7), and an IMU sensor (29). The thumb movement mechanism and the index finger mechanism respectively comprise rotating discs (12, 20), torque sensors (30, 31), angle sensors (21, 22), finger sleeves (2, 3), pressure sensors (19, 23), two-linkage rods (14, 16, 24, 26), brackets (17, 27) and fixing rings (18, 28). The handle mechanism comprises a cylindrical grip (4), a pressure sensor (9), a flexible fixing belt (5) and a sliding block (6). Torque is transmitted between the rotating discs (12, 20) and the motor (10) by means of a rope. The handle mechanism can move back and forth and self-reset. The problems that traditional finger force feedback is costly and unadjustable are solved. The device can be compactly worn and has adaptive degrees of freedom.
Patent WO-2022165775-A1 (WO)
Inventor: LONG QIBO
IPC: G06K9/00
Filed: 2021-02-05
Abstract: 本申请实施例提供了一种芯片封装结构和电子设备，该芯片封装结构包括：指纹传感器芯片，用于接收经由该显示屏上方的人体手指返回的指纹光信号，该指纹光信号用于检测该手指的指纹信息；环境光传感器芯片，用于接收该电子设备的环境光信号，该环境光信号用于检测该电子设备的环境光强度；电路板，该指纹传感器芯片和该环境光传感器芯片封装于该电路板；隔挡结构，设置于该指纹传感器芯片和该环境光传感器芯片之间，用于阻止该指纹传感器芯片与该环境光传感器芯片之间发生光线串扰。
Patent WO-2021164779-A1 (WO)
Title: Device and method employing novel structure for suppressing wave-making of ship
Inventor: ZENG DELIN
IPC: B63H11/04
Filed: 2021-02-21
Abstract: A novel method for suppressing wave-making of a ship. A plurality of wave-making water inlets (15) are arranged at the bow and two sides of the ship below a waterline of the ship. The wave-making water inlets (15) are associated with a propulsion device water inlet having both a propelling function and a wave drawing function and provided at an inner side of the ship below the waterline. When the ship travels, a propulsion device (1) draws in water from outside of the bow and the two sides, and expels same via the stern, so that the water becomes a part of a propelling water flow. The ship is not provided with a bulbous bow. A device employing a novel structure for suppressing wave-making of ship, wherein a wave-making water inlet (15) thereof has at least one of a flat-top water inlet structure, a protruding flat-top water inlet structure, or a protruding forward-tilted water inlet structure. The method and device reduce wave-making resistance acting on a traveling ship, and increase a force pushing the ship.
Patent WO-2021253864-A1 (WO)
Title: Broadcast receiving apparatus, server device, information record playing apparatus, and display system
Inventor: ABE HIROTOSHI
IPC: H04N5/93
Filed: 2021-02-25
Abstract: Provided are a broadcast receiving apparatus, a server device, an information record playing apparatus, and a display system, wherein same can display content by using a setting corresponding to a content characteristic without changing a setting of a user. The broadcast receiving apparatus is provided with a first receiving part, a changing part, a first determination part, and a display control part. The first receiving part receives content characteristic information used for determining characteristics of picture quality of content, and display setting information representing a display setting of the content according to each of the characteristics. The changing part changes an item, the setting of which is not changed in the broadcast receiving apparatus, in the display setting and set according to a characteristic of picture quality of each piece of content, into a setting represented by the display setting information. The first determination part determines a characteristic of picture quality of content on the basis of the content characteristic information. The display control part enables a display part to display content which is adjusted on the basis of the display setting of the characteristic determined by the first determination part.
Patent WO-2021190632-A1 (WO)
Title: 一种羟化酶基因及其应用
Inventor: LI XIAN
IPC: C12P17/06
Filed: 2021-03-26
Abstract: 本发明提供了一种羟化酶基因F3'5'H及其编码蛋白、含有该F3'5'H核苷酸序列的表达载体以及含有该表达载体的转基因细胞系和宿主菌。本发明还提供了上述物质在杨梅素及其他B环三羟基类黄酮合成和基因工程中的用途。
Patent WO-2022198685-A1 (WO)
Title: Reduced approximation sharing-based single-input multi-weights multiplier
Inventor: RAO CHAOLIN
IPC: G06F7/52
Filed: 2021-03-26
Abstract: An optimized multiplier design framework with quantization and approximate computing for multiplications in neural networks is provided. In the neural network accelerators in accordance with the present invention, the inputs and intermediate values are quantized to fixed-point numbers, and an approximate multiplier is designed to perform multiplications more efficiently by sharing the intermediate results. If the approximate multiplier produces unacceptable errors, a compensation method is provided to mitigate the errors.
Patent WO-2022204936-A1 (WO)
Inventor: ZHOU JIANWU
IPC: G01R15/20
Filed: 2021-03-30
Abstract: 一种电流传感器，其包括：磁体（1），在磁体（1）产生的磁场中存在磁感应强度大致为零的设置区域；以及感测芯片（2），感测芯片（2）设置于设置区域，用于通过感测在设置区域处的磁感应强度的变化，来确定待测电流的电流强度。这样，感测芯片（2）能够灵敏地感知待测电流对此区域处的磁场的影响，从而不必使得供待测电流流过的电流传导介质（例如母线B）穿过磁体（1），使得能够有效缩小电流传感器的尺寸，从而不会造成安装空间浪费。还提供一种包括电流传感器的车辆用电流感测系统。
Patent WO-2021197363-A1 (WO)
Title: 2-炔基甘露糖衍生物及其应用
Inventor: ZHENG JIYUE
IPC: C07H7/02
Filed: 2021-03-31
Abstract: 本发明涉及2-炔基甘露糖衍生物及其应用。该甘露糖衍生物及其药学上可接受的盐、同位素和异构体，具有通式I所示的结构：用于治疗或预防细菌感染。本发明还提供包含上述化合物的药学上可以接受的组合物及其在治疗或预防细菌感染上的应用。