baber/WOPTO huggingface dataset:
Patent WO-2022095200-A1 (WO)
Inventor: ZHANG CHI
IPC: B64D47/00
Filed: 2020-12-09
Abstract: 一种液位计（100）及无人机。液位计（100）包含第一支架（110）、主体（120）、弹性件（130）以及传感器模块（140）；第一支架（110）下端用以与一固定结构（211）连接；主体（120）活动连接于第一支架（110）上端；弹性件（130）设置于主体（120）与第一支架（110）之间，用以向主体（120）提供一向上的预紧力；传感器模块（140）设置于主体（120），用以感测磁通量。液位计（100）能够在设置于例如无人机机架（210）的固定结构（211）时，利用弹性件（130）提供的预紧力，保证液位计（100）紧密贴合于上方的容器（220）底部，提升液位计（100）的可靠性和准确性。
Patent WO-2021115472-A1 (WO)
Inventor: JIANG ZHENYU
IPC: H01L27/15
Filed: 2020-12-14
Abstract: Disclosed are a micro-LED chip and a manufacturing method therefor. The micro-LED chip comprises: a first metal backing layer; a first LED unit attached and electrically connected to the first metal backing layer; a first planarization layer, which is attached to the first metal backing layer and exposes the side of the first LED unit away from the first metal backing layer; a second metal backing layer attached to the first planarization layer on the periphery of the first LED unit; and a second LED unit attached and electrically connected to the second metal backing layer, wherein the projection of the second LED unit on the first metal backing layer is staggered from the projection of the first LED unit on the first metal backing layer. Through the above means, each LED chip provided in the present application at least comprises first LED units and second LED units that are stacked above and below one another and are staggered from each other. The micro-LED chip is compact in size, and can improve the arrangement density of the LED units and reduce the transfer costs of the micro-LED chip.
Patent WO-2021196750-A1 (WO)
Inventor: HUANG HERB HE
IPC: H03H9/17
Filed: 2020-12-17
Abstract: Disclosed are a film piezoelectric acoustic wave filter and a manufacturing method therefor. The manufacturing method for a film piezoelectric acoustic wave filter comprises: providing a first substrate, and forming a piezoelectric stacked structure on the first substrate, the piezoelectric stacked structure comprising a first electrode, a piezoelectric layer, and a second electrode sequentially formed on the first substrate; patterning the piezoelectric stacked structure to form a plurality of effective resonance regions, the first electrode, the piezoelectric layer, and the second electrode within the effective resonance regions being stacked on one another in the direction perpendicular to the piezoelectric layer; forming a first sacrificial layer above each effective resonance region such that the boundaries of the first sacrificial layers cover the boundaries of the effective resonance regions and adjacent first sacrificial layers are isolated from one another; forming a first dielectric layer that covers the first sacrificial layers and mutually isolated regions between the first sacrificial layers; providing a second substrate, and bonding the second substrate on the upper surface of the first dielectric layer; removing the first substrate; and removing the first sacrificial layers.
Patent WO-2022099854-A1 (WO)
Title: 一种银金属氧化物片状电触头制备方法
Inventor: WAN DAI
IPC: C23C14/16
Filed: 2020-12-17
Abstract: 一种银金属氧化物片状电触头制备方法，采用磁控溅射工艺对AgMeO基材镀银；银镀层厚度为0.01mm～0.20mm,银层分布均匀度±0.005mm；磁控溅射镀银期间AgMeO基材加热并保温至AgMeO基材熔点的30％-65％。所述制备方法应用磁控溅射技术，结合电触头的实际情况以及几种常规制备工艺各自的优点，形成独立高效且稳定的电触头制备方法，并在一定程度上规避上述工艺的缺点，在确保工作层和焊接银层结合强度的前提下，提高银层分布均匀性，降低开关电器中触点材料成本。
Patent WO-2022133703-A1 (WO)
Title: Fabric drying device for printing and dyeing equipment
Inventor: XU HAIFENG
IPC: F26B13/00
Filed: 2020-12-22
Abstract: A fabric drying device for printing and dyeing equipment, comprising a first case (1). Second cases (2) are fixedly connected to two sides of the first case (1); a first slide way (3) is formed on one side of the inner wall of each of the two second cases (2); a sliding plate (4) is slidably connected in the first slide way (3); connecting rods (5) are fixedly connected to opposite sides of the two sliding plates (4); opposite ends of the two connecting rods (5) both sequentially penetrate through the second cases (2) and the first case (1) and extend into the first case (1); a transverse block (6) is fixedly connected between the ends of the two connecting rods (5) extending into the first case (1); a vertical block (7) is fixedly connected to the top of each of the two sliding plates (4); a second slide way (8) is formed on one side of the vertical block (7); a fixed block (9) is fixedly connected to the top of one side of the vertical block (7). The present drying device can quickly and sufficiently dry a fabric, the drying speed is high, the drying is more sufficient, the fabric drying efficiency and effect are greatly improved, the use effect is good, and better and quicker fabric production is guaranteed.
Patent WO-2021232799-A1 (WO)
Title: Generic inert carrier salmonella and potential use thereof
Inventor: ZHU GUOQIANG
IPC: C12R1/42
Filed: 2020-12-28
Abstract: Provided are a generic inert carrier Salmonella S9H and the use thereof. The generic inert carrier Salmonella S9H is obtained by means of continuously culturing the inert carrier bacterium S9 in vitro with LB solid and liquid culture media for passage to the fortieth generation. The carrier does not undergo a non-specific agglutination reaction with human-derived, mouse-derived, bovine-derived, pig-derived and poultry-derived (including chicken, duck, goose, turkey, pigeon and quail) sera and whole blood under the number of bacteria at the working concentration, and has the properties of carrying and expressing on the surface different human-derived, mouse-derived, bovine-derived, pig-derived and poultry-derived (including chicken, duck, goose, turkey, pigeon and quail) antigen factors. The carrier can be applied to the development of an indirect agglutination test detection method for simply and quickly detecting human and various animal antigens or infection antibodies, and improves and perfects the technical bottleneck of poor specificity and sensitivity of existing agglutination tests for detecting agglutination antigens and antibodies.
Patent WO-2022083004-A1 (WO)
Inventor: LIN DEXI
IPC: G06F3/041
Filed: 2020-12-29
Abstract: 一种智能黑板及其数据处理方法和装置，智能交互平板，智能黑板包括：至少一个黑板本体（20）、交互设备主体（10）和触摸框（30），交互设备主体（10）的至少一条边与至少一个黑板本体（20）拼接，构成组合黑板，触摸框（30）设置于组合黑板外围，该方法包括：接收生成于交互设备主体（10）上的第一触摸操作，根据第一触摸操作进行相应的处理（S402）；接收生成于黑板本体（20）上的第二触摸操作，根据第二触摸操作生成相应的书写笔迹（S404）；在交互设备主体（10）当前的显示界面叠加上显示画板书写单元对应的第一书写界面（S406）；在第一书写界面中显示书写笔迹（S408）。本方案解决了现有技术中的智能黑板虽然嵌入了智能交互平板，但智能化程度仍然较低的技术问题。
Patent WO-2022141309-A1 (WO)
Inventor: FAN JIANGSHENG
IPC: H04W4/90
Filed: 2020-12-30
Abstract: The present application relates to an authorization configuration method, a terminal device, and a network device. The authorization configuration method comprises: a terminal device receives authorization configuration information, the authorization configuration information comprising emergency communication service authorization indication information associated with the identifier of at least one sub-network supported by a cell. According to embodiments of the present application, the emergency communication service authorization indication information associated with the identifier of the at least one sub-network supported by the cell facilitates more flexibly supporting an emergency communication service.
Patent WO-2021164465-A1 (WO)
Title: Intelligent early warning method and system
Inventor: Huang beichen
IPC: G06Q10/06
Filed: 2021-01-12
Abstract: An intelligent early warning method, comprising: acquiring a service scenario related to a target user and a variable index related to the service scenario (S100); configuring a variable index parameter of the variable index (S102); monitoring whether the variable index parameter exceeds a preset index range (S104); and if the variable index parameter exceeds the index range, then generating, on the basis of a preset natural language description template and of the variable index parameter, early warning information to be viewed by the user (S106). The method allows all-around monitoring of variable index data, increases the efficiency of irregularity monitoring, thus saving time.
Patent WO-2021143732-A1 (WO)
Title: Video playing method and apparatus
Inventor: Cang peng
IPC: H04N21/433
Filed: 2021-01-13
Abstract: The present disclosure relates to a video playing method and apparatus. The method comprises: in response to a target video playing instruction, acquiring a first caching progress of a target video; in response to the first caching progress being less than or equal to a first preset threshold value, loading and presenting a first multimedia resource, wherein the first multimedia resource comprises a picture and/or an audio; and during the process of presenting the first multimedia resource, caching the target video. The method displays the image and/or audio to a user when the first caching progress is less than or equal to the first preset threshold value, and caches the target video during displaying.
Patent WO-2022151073-A1 (WO)
Inventor: YANG HONGJIAN
IPC: H04W72/12
Filed: 2021-01-13
Abstract: La présente invention concerne un procédé et un appareil de transmission d'informations d'accusé de réception de liaison montante (ACK), destinés à être utilisés pour résoudre le problème de consommation excessive de ressources lors du rapport de multiples livres de codes HARQ-ACK. Le procédé comprend : un dispositif terminal peut obtenir de multiples premiers livres de codes HARQ-ACK, chacun des multiples premiers livres de codes HARQ-ACK comprenant des informations HARQ-ACK d'au moins un canal de données de liaison descendante, chaque premier livre de codes HARQ-ACK correspondant à un premier identifiant temporaire de réseau radio (RNTI), et le premier RNTI correspondant à chaque premier livre de codes HARQ-ACK étant différent ; puis, le dispositif terminal peut envoyer un canal de liaison montante physique à un dispositif réseau, le canal de liaison montante physique transportant un deuxième livre de codes HARQ-ACK, le deuxième livre de codes HARQ-ACK comprenant au moins l'un des multiples premiers livres de codes HARQ-ACK qui sont connectés en série selon une séquence prédéfinie, et la séquence prédéfinie étant déterminée par de multiples premiers RNTI correspondant aux multiples premiers livres de codes HARQ-ACK.
Patent WO-2022151304-A1 (WO)
Inventor: HAO CHENXI
IPC: H04L5/00
Filed: 2021-01-15
Abstract: La présente invention concerne d'une manière générale, dans divers aspects, la communication sans fil. Dans certains aspects, un équipement utilisateur (UE) peut déterminer une transmission d'un rapport d'informations d'état de canal (CSI) sur la base, au moins en partie, de la réception d'une demande de CSI par l'intermédiaire de répétitions de PDCCH, sur la base, au moins en partie, de la transmission du rapport de CSI par l'intermédiaire de répétitions de PUCCH, ou sur la base, au moins en partie, de la transmission du rapport de CSI par l'intermédiaire de répétitions de PUSCH. L'UE peut déterminer, sur la base, au moins en partie, de la transmission déterminée du rapport de CSI, des critères de traitement de CSI comprenant une ligne de temps de traitement de CSI et/ou une durée d'occupation d'unité de traitement de CSI et/ou une durée d'occupation de ressource et de port et/ou une fente de ressource de référence de CSI. L'UE peut transmettre sélectivement le rapport de CSI sur la base, au moins en partie, des critères de traitement de CSI déterminés. De nombreux autres aspects sont décrits.
Patent WO-2022151354-A1 (WO)
Inventor: LIU JIANGUO
IPC: H04W52/24
Filed: 2021-01-15
Abstract: Un procédé consiste à collecter des informations en provenance d'un équipement utilisateur ou d'au moins un nœud de réseau associé à une configuration d'informations d'assistance de positionnement pour l'équipement utilisateur; à déterminer une règle pour un ou plusieurs paramètres de commande de puissance d'émission de l'équipement utilisateur pour un signal de référence de positionnement dans un état inactif de commande de ressource radio, sur la base des informations collectées; et à signaler la règle et le ou les paramètres de commande de puissance d'émission soit à l'équipement d'utilisateur, soit audit nœud de réseau; le ou les paramètres de commande de puissance d'émission étant configurés pour être utilisés pour une transmission d'un signal de référence de positionnement dans un état inactif de commande de ressource radio, sur la base de ladite règle.
Patent WO-2021212933-A1 (WO)
Inventor: LI CHAO
IPC: G06F15/167
Filed: 2021-01-18
Abstract: An FPGA-based concurrent graph data preprocessing method, comprising: extracting source graph data blocks and graph data features from a graph data format information input set and an algorithm information input set, generating a graph data and graph algorithm combination matrix, and performing graph data format pre-conversion; and determining a process allocation mode by means of flow driven scheduling according to the power law of graph data, and then performing matched data segmentation and concurrent design according to attribute parameters of an FPGA accelerator in a heterogeneous platform. Therefore, the implementation flow of data preprocessing and scheduling optimization of the entire concurrent graph processing process on an FPGA is implemented. According to the method, by using a concurrent scheduling policy of combining GPU and FPGA acceleration platforms, the resource utilization and the overall performance are significantly improved by means of overall preprocessing and scheduling optimization after an optimal data format is selected, and the high efficiency of a graph calculation process is ensured.
Patent WO-2021155779-A1 (WO)
Inventor: ZHANG GANGJIN
IPC: D06F37/40
Filed: 2021-02-02
Abstract: 本发明提供了一种洗衣机的减速离合装置、洗衣机及其控制方法，减速离合装置，包括减速机构及离合机构，所述的减速机构包括可双向转动的制动轮以及分别与所述制动轮固定连接的内桶轴、输入轴套，所述的离合机构包括套设在输入轴套上并可沿其轴线方向往复运动的离合套、固定套设在输入轴套外部的洗涤齿架，所述的离合套与洗涤齿架啮合锁定所述输入轴套，所述的离合机构还包括拨动离合套往复运动的拨叉组件以及驱动拨叉组件运动的拨叉驱动装置，所述的拨叉驱动装置具有至少两个行程以拨动拨叉组件具有至少两个运动位置。本发明的拨叉驱动装置具有至少两个行程，以实现离合套的多运动位置，减速离合装置可提供多种洗涤工况。
Patent WO-2022165635-A1 (WO)
Inventor: BAO HUJUN
IPC: G06T17/00
Filed: 2021-02-02
Abstract: L'invention concerne un procédé de reconstruction d'un corps humain tridimensionnel à l'aide d'un miroir. Le procédé comprend les étapes suivantes : fournir en entrée une image comprenant un miroir, un corps humain et une image réfléchie de corps humain, et considérer l'image réfléchie de corps humain comme une image capturée par une caméra virtuelle ; et reconstruire simultanément les orientations et les positions respectives du corps humain et de l'image réfléchie et des paramètres de posture tridimensionnelle de celles-ci en utilisant une contrainte de partage de paramètre de posture tridimensionnelle de corps humain, une contrainte de symétrie de miroir, une contrainte de reprojection, etc., de manière à résoudre efficacement les problèmes d'ambiguïté de profondeur et de blocage d'une posture de corps humain par un seul angle de vue. De plus, l'invention concerne aussi un procédé d'estimation d'une direction normale de miroir et d'un paramètre intrinsèque d'une caméra à l'aide d'un point clé sémantique d'un corps humain, de sorte que l'orientation d'un corps humain puisse être contrainte explicitement, ce qui améliore davantage la précision de reconstruction.
Patent WO-2021164549-A1 (WO)
Title: Electric energy-driven jet aircraft engine and aircraft
Inventor: WANG ZHENHUI
IPC: F02C9/20
Filed: 2021-02-03
Abstract: An electric energy-driven jet aircraft engine, comprising a jet core engine (3) comprising a gas compressor (31) and an accelerator (32) which are sequentially arranged in a gas inlet direction, wherein the gas compressor (31) is used for deceleration and pressurization of inlet air flow, the accelerator (32) is used for acceleration and pressurization/pressure maintaining/depressurization of the inlet air flow, and the gas compressor (31) and the accelerator (32) are integrally connected in a front-back direction; and further comprising an electric energy driving mechanism (4) for supplying power to the gas compressor (31) and the accelerator (32). In addition, a single-stage or multi-stage fan (5) is arranged in an outer duct at the outer periphery of the jet core engine (3); any stage of fan (5) is in direct or transmission connection with the electric energy driving mechanism (4). Due to relatively independent design of the outer duct fan and the inner duct jet core engine, the operation of a pure jet mode, a pure fan mode, and a mixed mode of the pure jet mode and the pure fan mode can be achieved, which are respectively suitable for high, medium and low flight speeds so as to realize high efficiency in a full speed domain. Therefore, the electric energy-driven jet aircraft engine has the advantages of multi-mode, wide-speed domain and high efficiency. Also disclosed is an aircraft comprising the electric energy-driven jet aircraft engine.
Patent WO-2022121145-A1 (WO)
Title: 一种基于图分类的以太坊网络钓鱼诈骗检测方法及装置
Inventor: WU JIAJING
IPC: G06Q40/04
Filed: 2021-03-19
Abstract: 本申请公开了一种基于图分类的以太坊网络钓鱼诈骗检测方法及装置，方法包括: 从以太坊网络中提取目标节点和预置阶邻居节点，预置阶邻居节点包括一阶邻居节点和二阶邻居节点; 根据一阶邻居节点和二阶邻居节点构建以目标节点为中心节点的二阶交易子图网络; 根据二阶交易子图网络中各节点的相关交易信息数据对二阶交易子图网络进行提炼处理，得到目标交易子图网络; 采用预置图嵌入算法提取目标交易子图网络中的特征，得到网络表示向量; 将网络表示向量输入预置分类器中进行二分类处理，得到目标钓鱼节点。本申请能够解决现有技术的手工特征局限性较为明显，且处理过程复杂，导致时间和运算成本较高的技术问题。
Patent WO-2021190519-A1 (WO)
Title: 功率调整方法及节点设备
Inventor: LIU JINHUA
IPC: H04W72/04
Filed: 2021-03-23
Abstract: 本发明实施例提供一种功率调整方法及节点设备，该方法包括：向目标设备上报功率调整参数；其中，上述功率调整参数用于指示目标功率值；上述功率调整参数用于调整第二IAB节点设备的发送功率；上述目标功率值包括以下至少一项：第一功率值，第二功率值；上述第一功率值为第一IAB节点设备期望的接收功率值；上述第二功率值为第一IAB节点设备建议的第二IAB节点设备的发送功率值或发送功率调整值；上述目标设备包括第二IAB节点设备或IAB控制节点设备。
Patent WO-2021227687-A1 (WO)
Inventor: MIAO XIAONIU
IPC: A61P31/14
Filed: 2021-03-30
Abstract: 提供了一种抗SARS-CoV2 Spike 1的抗体与细胞受体ACE2胞外区的融合蛋白，用于治疗SARS-CoV2感染。还提供了该融合蛋白的表达载体和能够表达该融合蛋白的宿主细胞，以及该抗体的生产方法。
Patent WO-2021208866-A1 (WO)
Title: Time of flight (tof) measurement method and apparatus
Inventor: YU KAI
IPC: G01S17/14
Filed: 2021-04-12
Abstract: A time of flight (TOF) measurement method and apparatus (500). The apparatus comprises a controller (501), a time-to-digital converter (502), a pulse emitter (503), and a pulse receiver (504). The controller (501) is used for controlling, within an operating period and according to a predetermined emitting rule, the pulse emitter (503) to sequentially send M emitted pulses, the emitting rule being peculiar to the measurement apparatus (500) (901); the pulse emitter (503) is used for receiving N feedback pulses within the operating period (902); the time-to-digital converter (502) is used for obtaining TOF information corresponding to the N feedback pulses (903); the controller (501) is further used for obtaining target TOF according to the TOF information corresponding to the N feedback pulses, and obtaining a target distance according to the target TOF (904).
Patent WO-2022217452-A1 (WO)
Title: Sealing valve and closed structure anesthetic bottle
Inventor: SUN XIANGMING
IPC: A61M16/18
Filed: 2021-04-13
Abstract: The present application discloses a sealing valve (10), including a guiding tube (1), comprising a first end (11) configured to be inserted into an outer packaging bottle and a second end configured to be connected to an anesthesia vaporizer (12); the outer peripheral surface of the first end (11) is provided with a convex ring (111) protruding toward the inner wall of the outer packaging bottle and abutting against the inner wall of the outer packaging bottle; and a pushing rod (2) configured to be arranged in the guiding tube (1) and slidable along an axial direction of the guiding tube (1) to connect the anesthesia vaporizer with the outer packaging bottle or to block between the anesthesia vaporizer and the outer packaging bottle. The arrangement of the convex ring (111) can ensure the purity of the liquid drug in the outer packaging bottle and at the same time improve the sealing property of the outer packaging bottle.
Patent WO-2022217487-A1 (WO)
Title: Latency triggered sidelink resource reselection
Inventor: GU GUIBING
IPC: H04W72/04
Filed: 2021-04-14
Abstract: Certain aspects of the present disclosure provide techniques for sidelink communications. A method that may be performed by a user equipment (UE) includes monitoring a latency between a packet arrival time from an upper layer at the UE and an over-the-air (OTA) packet transmission time. The latency is based at least in part on, a first number of subframes reserved for a si delink synchronization signal (SLSS) and/or a second number of subframes reserved based on a configured subframe bitmap. The method includes triggering a transmit resource selection at the UE when the latency exceeds a threshold latency.
Patent WO-2021238499-A1 (WO)
Title: Method and device for fast binocular image processing
Inventor: CHEN DAN
IPC: G06T5/50
Filed: 2021-04-19
Abstract: Provided in the present invention is a method for fast binocular image processing. The method comprises: performing feature extraction with respect to a low-level left-eye image and a low-level right-eye image; acquiring a phase difference distribution estimated feature of the low-level images; merging the phase difference distribution estimated feature with a low-level left-eye image feature to produce a low-level merged feature; performing feature extraction with respect to the low-level merged feature to produce differential features of the low-level left- and right-eye images and to produce an estimated phase difference of the low-level left- and right-eye images; acquiring an estimated phase difference of first-level left- and right-eye images; and using the estimated phase difference of the first-level left- and right-eye images to perform an image processing operation with respect to a corresponding image.
Patent WO-2021233079-A1 (WO)
Inventor: GU HEJIN
IPC: H04N21/41
Filed: 2021-04-26
Abstract: 一种内容投射方法及设备，涉及投屏技术领域，通过第一电子设备和第三电子设备简单的碰一碰操作，实现了第三电子设备和第二电子设备快速建立投屏连接。其中，第一电子设备为已与第二电子设备建立投屏连接的设备。所述方法包括：第三电子设备播放第二内容；第三电子设备的NFC芯片触碰或靠近第一电子设备的NFC芯片；第三电子设备接收第一电子设备发送的连接状态信息；第三电子设备根据连接状态信息将第二内容投射至第二电子设备。
Patent WO-2021219016-A1 (WO)
Inventor: MA ZHIHAO
IPC: B01D53/78
Filed: 2021-04-28
Abstract: A gas treatment device, comprising a cavity enclosed by a housing (1), and a filter unit (2) provided in the cavity. Both ends of the device housing (1) are respectively provided with an air inlet (106) and an air outlet (108) for gas to enter and exit the cavity. The filter unit (2) is driven to rotate and is separated between the air inlet (106) and the air outlet (108). The cavity is not fully filled with a treatment liquid, and the filter unit (2) is partially immersed in the treatment liquid. A channel is formed above the liquid level of the treatment liquid for gas to flow through. When the gas flows through the channel, the gas passes through the filter unit (2) soaked with the treatment liquid.
Patent WO-2021254023-A1 (WO)
Inventor: LIU YONG
IPC: B65G1/04
Filed: 2021-05-08
Abstract: 一种立体化便捷式转运存储稀土废料的装置，包含混凝土基座(1)，混凝土基座(1)上端面两侧分别横向固定有钢筋混凝土浇筑的支撑梁(2)，两根支撑梁(2)之间的混凝土基座(1)上横向固定有多根固定梁(3)，两根支撑梁(2)上端面靠近固定梁(3)的一侧、以及固定梁(3)上端面两侧均分别横向一体浇筑有角铁(4)，支撑梁(2)与固定梁(3)之间以及相邻的两根固定梁(3)之间的混凝土基座(1)上均匀放置有多个放置盒Ⅱ(6)，放置盒Ⅱ(6)包括底板Ⅱ(601)和挡板Ⅱ(602)，混凝土基座(1)上方相对设置的两个角铁(4)之间均放置有多个放置盒Ⅰ(5)，放置盒Ⅰ(5)包含底板Ⅰ(501)和挡板Ⅰ(503)，底板Ⅰ(501)和底板Ⅱ(601) 的下端面前后两侧均固定有多个便于叉车搬运的限位块(7)。将稀土废料装袋后放置于放置盒Ⅰ(5)和放置盒Ⅱ(6)内并借助叉车搬运而整齐摆放在上述装置上，既可避免稀土废料造成土壤污染和空气粉尘污染，又方便稀土废料的转运。