baber/WOPTO huggingface dataset:
Patent WO-2019041838-A1 (WO)
Title: Novel coupling phase shifter
Inventor: SLEDKOV VICTOR ALEKSANDROVICH
IPC: H01P1/18
Filed: 2018-04-23
Abstract: The present invention relates to the field of mobile communications, and more particularly, to a novel coupling phase shifter, comprising a conductor cavity manufactured using a metal pultrusion process, a phase shift circuit formed by a conductor strip line or a printed circuit board, an insulating dielectric element, and a coaxial cable. An output port of the phase shift circuit is connected to an inner conductor of the coaxial cable by welding, and an outer conductor layer of the coaxial cable is connected to a phase shifter cavity by capacitive coupling. Electroplating of the phase shifter cavity is avoided, and welding is reduced. This design avoids an electroplating process of the phase shifter cavity of a base station antenna, reduces a process of welding the coaxial cable to the phase shifter cavity during production, decreases costs, reduces the number of welds, improves production efficiency, and also protects the natural environment by eliminating the need of electroplating.
Patent WO-2018210307-A1 (WO)
Title: 一种调试装置及系统
Inventor: LI GANG
IPC: G05B19/042
Filed: 2018-05-17
Abstract: 一种调试装置，属于计算机领域，包括调试线体与两个端口，两个端口分别连接调试设备(30)和被调试设备(40)，调试线体包括一个调试开关(11)和4条引线A(12)、B(13)、C(14)、D(15)，引线A(12)连接调试设备(30)的VCC接口与被调试设备(40)的VBUS接口，引线B(13)连接调试设备(30)的RX接口与被调试设备(40)的TX接口，引线C(14)连接调试设备(30)的TX接口与被调试设备(40)的RX接口，引线D(15)连接移动调试设备(30)的GND接口与被调试设备(40)的GND接口，调试开关(11)设置在引线A(12)上。通过在调试线线体上设置一个调试开关(11)，该调试开关(11)与调试设备(30)的VCC电源接口连接，需要唤醒被调试设备时，只需按一下调试开关(11)，被调试设备(40)将输入一个高电平脉冲信号，得到唤醒。
Patent WO-2019109602-A1 (WO)
Title: 矸石零排放短面无煤柱开采法
Inventor: ZHANG NONG
IPC: E21C41/18
Filed: 2018-05-23
Abstract: 一种矸石零排放短面无煤柱开采法，适用于矿井矸石零排放处理时使用。根据矿井实际情况，在矿井井筒附近选择一个区域布置短工作面（1），采用全采全充的方式对短工作面（1）进行开采，将矿井其他开采工作面中产生的矸石充填入短工作面（1），短工作面（1）沿充填面边缘和实体煤侧锚杆化支护进行留巷（2），利用留巷（2）进行相邻短工作面（5）的开采。本发明主要通过矸石置换煤体，实现了资源利用的最大化，同时又能完全控制顶板，实现岩层的无损化开采，推广应用价值高。
Patent WO-2019011142-A1 (WO)
Title: Network link switching method and system
Inventor: LI YANCHAO
IPC: H04L12/725
Filed: 2018-07-02
Abstract: The embodiments of the present application relate to the field of Internet technology, and in particular, to a method and a system for performing network link switching, which can be used to solve the problem in the prior art that when interconnection cannot be achieved, selection of and switching to other network links can only be accomplished by means of manual intervention, which is relatively inefficient and requires a relatively longer processing time. According to the embodiment of the present application, the performance parameters are monitored of multiple network links corresponding to user sets in multiple network links corresponding to currently set network optimization information, a target network link is determined according to the monitored performance parameters, and network link switching is performed. According to the embodiment of the present application, network link switching can be performed after it is determined that the network link switching condition is met according to the monitored performance parameter, and manual switching is not required, thereby improving switching efficiency and shortening processing time.
Patent WO-2019029435-A1 (WO)
Title: Method and electronic apparatus for wireless communication, storage medium
Inventor: HOU YANZHAO
IPC: H04L5/00
Filed: 2018-08-03
Abstract: The present disclosure provides a method and electronic apparatus for wireless communication and a computer readable storage medium. The electronic apparatus comprises a processing circuit. The electronic apparatus is configured to determine whether a related parameter of an available component carrier in a sidelink satisfies a preset condition; and if the related parameter satisfies a present condition, to configure the available parameter for use as a secondary component carrier in carrier aggregation of the sidelink.
Patent WO-2019205345-A1 (WO)
Title: User information synchronization method, device, computer device, and storage medium
Inventor: SONG JIANFENG
IPC: H04L29/08
Filed: 2018-08-10
Abstract: The present application provides a user information synchronization method, comprising: acquiring user information in each operation environment of a system having multiple data centers; performing a matching operation on the acquired user information in different operation environments, and obtaining a user to be synchronized and an operation environment to be synchronized corresponding to said user; and performing virtual registration of the user to be synchronized in the operation environment to be synchronized. The present application also discloses a user information synchronization device, a computer device, and a storage medium. The present application maintains consistency of basic user information in a system having multiple data centers at different locations.
Patent WO-2020034054-A1 (WO)
Title: Novel sleeve
Inventor: ZHAO JIANYA
IPC: F16C33/10
Filed: 2018-08-13
Abstract: A novel sleeve, comprising a tubular sleeve body, wherein the inner wall of the sleeve body is provided with a spiral slot path which is wound in an inner peripheral direction of the sleeve body; at least one ring loop is wound on the spiral slot path; the outer wall of the sleeve body is provided with an oil injecting hole and an oil outlet; one end of the spiral slot path communicates with the oil injecting hole, and the other end thereof communicates with the oil outlet; the spiral slot path has a width of 0.1-0.2 cm and a depth of 0.2-0.3 cm; a spiral lead angle of the spiral slot path is 20-25 degrees; the oil injecting hole is a varying-diameter hole with an outer-end hole diameter greater than an inner-end hole diameter; the inner wall (other than the inner wall of the spiral slot path) of the sleeve body is equipped with a copper layer, the copper layer having a thickness of 0.4-0.6 mm; and the inner wall of the spiral slot path is equipped with a surface-roughened lipophilic layer which has a thickness of 1-2 mm and a surface roughness of 0.2-0.4 μm.
Patent WO-2020024342-A1 (WO)
Title: Data parsing method and device
Inventor: Zheng Lifan
IPC: G06F11/30
Filed: 2018-08-22
Abstract: Disclosed by the present invention are a data parsing method and device, the method and device being applied to a Grafana analysis system, wherein the method comprises: receiving a parsing task for a target data source, and generating an aggregate item process corresponding to the parsing task; generating a query statement corresponding to the aggregate item process, wherein the query statement comprises a sub-statement matching each aggregate item in the aggregate item process, and analyzing the target data source by means of the query statement to obtain a query result of the target data source, the query result comprising an aggregate result of each sub-statement; traversing various aggregate results in the query result so as to acquire aggregate information of the aggregate results, and generating a parsing result of the parsing task according to the acquired aggregate information. The technical solution provided by the present application is capable of parsing nested data structures.
Patent WO-2020037617-A1 (WO)
Inventor: LIU SHUAI
IPC: G08C17/00
Filed: 2018-08-23
Abstract: 一种云台控制方法、云台和云台控制系统，所述方法包括：获取鼠标的移动速度（S101）；根据所述鼠标的移动速度，控制所述云台的姿态（S102）。通过鼠标输入直接控制云台的姿态，更符合第一人称射击类游戏玩家的操作习惯，鼠标的输入的灵敏度和分辨率较高，有利于迅速控制、精细操作和精准响应。
Patent WO-2019200818-A1 (WO)
Inventor: QIU YONGYUAN
IPC: G02F1/13357
Filed: 2018-09-07
Abstract: A liquid crystal display apparatus. According to the liquid crystal display apparatus, the structure of a liquid crystal display panel and that of a backlight module are integrated, and a backlight source (40) of the backlight module is directly arranged on a TFT array substrate (10) of the liquid crystal display panel, the backlight source (40) is arranged on the top surface of the TFT array substrate (10), and a base of a color filter substrate (20) is used as a light guide plate or a light guide plate (60) is separately arranged to guide light emitted by the backlight source (40), or the backlight source (40) is arranged on the bottom surface of the TFT array substrate (10), and the light guide plate (60) is separately arranged to guide light emitted by the backlight source (40); and a terminal correspondingly connected to a pin of the backlight source (40) and a wiring connected to the terminal are further arranged on the TFT array substrate (10), and the backlight source (40) can be driven by means of a circuit board (90) connected to the wiring, thereby effectively reducing the thickness of the liquid crystal display apparatus, reducing the cost of a product, and improving the quality of the product.
Patent WO-2019056997-A1 (WO)
Title: Mop cleaning system
Inventor: ZHU CHENHUI
IPC: A47L13/58
Filed: 2018-09-14
Abstract: A mop cleaning system, comprising a cleaning bucket (2) and a mop (1); the mop (1) comprises a mop rod (11) and a mop head (12), the mop rod (11) being connected to the mop head (12); the cleaning bucket (2) is internally provided with a support body (4) that supports the mop, and the cleaning bucket (2) further internally provided with a drum (3), the drum (3) being rotatingly provided by using the axial direction (a) thereof as the axis of rotation. During cleaning, the mop head (12) rotates so as to drive the drum (3) to rotate.
Patent WO-2019214142-A1 (WO)
Title: Electronic device, research report data-based prediction method, program, and computer storage medium
Inventor: LI ZHENGYANG
IPC: G06Q10/04
Filed: 2018-09-26
Abstract: An electronic device, a research report data-based prediction method, a program, and a computer storage medium. The method comprises: acquiring a plurality of pieces of research report data on a prediction object during a first preset time interval (S10); analyzing and processing the plurality of pieces of acquired research report data according to a predetermined analysis rule to obtain research report prediction data of each research report (S20); and inputting all the obtained research report prediction data to a pre-established prediction model and using the result data output from the prediction model as a predicted value of the prediction object (S30). Compared with the prior art, the prediction model is trained based on a plurality of pieces of historical research report data, and can not only obtain more objective and accurate prediction results based on research report data in real time, but also has the advantages of high efficiency and labor saving.
Patent WO-2019218596-A1 (WO)
Inventor: QIN XU
IPC: G09G3/20
Filed: 2018-10-24
Abstract: 一种显示面板（100）和显示装置，显示面板（100）包括第一显示区（111）、第二显示区（112）和非显示区（120），第一显示区（111）内像素单元（101）数量小于第二显示区（112）内像素单元（101）数量。第一显示区（111）包括第一扫描线（102）；非显示区（120）的固定电位信号线（104）包括第一信号线（105）和第二信号线（106），第二信号线（106）与第一信号线（105）连接，第二信号线（106）包括连接部（1061）和连接于连接部（1061）的间隔设置的条形部（1062），第二信号线（106）的宽度大于第一信号线（105）的宽度；第一扫描线（102）通过引出线（107）延伸至非显示区（120）与第二信号线（106）重叠产生寄生电容，用以对第一扫描线（102）进行负载补偿。第二信号线（106）采用间隔设置的条形部（1062），可减小第一信号线（105）与第二信号线（106）的线宽差异，进而减小连接于第一信号线（105）和第二信号线（106）上的像素单元（101）的电压差异，使像素电流相同，提高了显示的均一性。
Patent WO-2019095989-A1 (WO)
Title: 一种缓存同步异常的处理方法和设备
Inventor: LIU JIAMIN
IPC: H04L29/06
Filed: 2018-10-29
Abstract: 本发明公开了一种缓存同步异常的处理方法和设备，用以解决现有技术中并没有针对压缩校验失败的处理方案的问题。本发明实施例在缓存不同步后，向发送设备发送缓存失败通知消息，并对压缩缓存区进行复位处理以及发送复位指示，利用复位处理后的缓存区进行后续的数据包传输。本发明中在确定缓存不同步后，会发送缓存失败的通知消息，发送设备对压缩缓存区进行复位处理，并告知接收设备进行解压缓存区进行复位处理，利用复位处理后的缓存区进行后续的数据包传输，不仅解决了现有技术中发生压缩校验失败的问题，还保证了UDC功能得到充分的利用，节省了空口资源，提升了传输效率。
Patent WO-2019128588-A1 (WO)
Inventor: FANG PAN
IPC: G06F9/50
Filed: 2018-11-26
Abstract: La présente invention concerne un procédé de traitement de processus, comprenant les étapes consistant : à obtenir un premier processus s'exécutant au premier plan d'un dispositif électronique ; à obtenir un second processus, le second processus étant un processus d'arrière-plan que le premier processus utilise ; et à régler la priorité du second processus de manière à correspondre à la priorité du premier processus.
Patent WO-2020107179-A1 (WO)
Inventor: LI QIPENG
IPC: G21F5/012
Filed: 2018-11-26
Abstract: A fuel assembly transport container and a supporting assembly (22) therefor. At least one accommodation cavity (4) for accommodating and holding a fuel assembly (3) is formed in the supporting assembly (22). The supporting assembly (22) comprises a frame (223), an outer cover plate (224) and an inner cover plate (227). The accommodation cavity (4) is bounded by the outer cover plate (224) and the inner cover plate (227). The frame (223) extends in a longitudinal direction of the accommodation cavity (4), and comprises a bottom wall (2231) and a sidewall (2232) provided at one side of the bottom wall (2231). Each of the outer cover plate (224) and the inner cover plate (227) has a semicircular shape. The inner cover plate (227) is provided within an included angle between the bottom wall (2231) and the sidewall (2232). The outer cover plate (224) is connected to an outer side of the sidewall (2232) away from the bottom wall (2231) and a longitudinal side of the bottom wall (2231). The outer cover plate (224) and the inner cover plate (227) form a cylindrical structure which defines therein the accommodation cavity (4) for accommodation of the fuel assembly (3). The curved structure enhances the strength of the outer cover plate (224) against forces exerted thereon, such that the outer plate remains stable even in the event of tipping or an impact caused by a fall, thereby resisting impacts and protecting the fuel assembly (3) inside the supporting assembly. The circularly curved outer plate (224) has a compact structure, thereby reducing requirements on an external loading structure.
Patent WO-2020082512-A1 (WO)
Inventor: YAN ZHENGHUA
IPC: E04H15/54
Filed: 2018-12-03
Abstract: An indoor newborn climbing tent, comprising a tent cloth (100) and supporting rods (200). The supporting rods (200) are spring steel strip rods; the tent cloth (100) comprises an arc-shaped side cloth (1) and a bottom cloth (2), the bottom cloth (2) is rectangular, the side cloth (1) is connected to the long edges of the bottom cloth (2) in a sewed mode, a transparent dismantling layer (3) is provided at the top of the side cloth (1), the edges of the dismantling layer (3) are connected to the side cloth (1) by means of zippers, and observation windows (4) are provided on the dismantling layer (3); the side cloth (1) is of a double-layer structure, the multiple supporting rods (200) are provided in the side cloth (1) in a sewed mode, and the supporting rods (200) with the dismantling layer (3) as a center are provided symmetrically; and guiding components (5) are provided in the side cloth (1) and each guiding component (5) comprises a hanging ring (51), a traction rope (52), and a guiding ball (53), the hanging rings (51) are fixedly connected to the inner side wall of the side cloth (1), the hanging rings (51) are connected to the guiding balls (53) by means of the traction ropes (52), and sound producing members (54) and luminous members (55) are provided in the guiding balls (53); and the bottom cloth (2) comprises a protective layer (201), a damp proof layer (202), and an antiskid layer (203) which are sequentially arranged from top to bottom. A newborn can practice climbing in the indoor newborn climbing tent, and parents can conveniently observe and effectively monitor the newborn.
Patent WO-2020113401-A1 (WO)
Inventor: LIU KUILONG
IPC: H04L29/06
Filed: 2018-12-04
Abstract: L'invention concerne un procédé, un appareil et un dispositif de détection de données. Le procédé suppose de détecter la sécurité de données à détecter en fonction d'informations sur des attributs des données à détecter et d'un modèle prédéfini (S202). Le modèle prédéfini est obtenu par apprentissage de données d'échantillons au moyen d'un réseau neuronal. L'efficacité et la précision de détection de données s'en trouvent accrues.
Patent WO-2020113494-A1 (WO)
Title: Health capsule for improving sleep
Inventor: CHEN HUI
IPC: A61P25/20
Filed: 2018-12-06
Abstract: Disclosed is a health capsule for improving sleep, consisting of Hericium erinaceus, Ganoderma lucidum, spine date seeds, Poria cocos and pearls. The capsule is rich in nutrients, has a variety of healthy and nutritional ingredients, can enhance immunity and improve sleep, and is convenient to make.
Patent WO-2019233071-A1 (WO)
Title: Multi-energy coordinated control system and method suitable for ac/dc hybrid distributed system
Inventor: LIU QIANJIE
IPC: H02J3/38
Filed: 2018-12-10
Abstract: A multi-energy coordinated control system and method suitable for an AC/DC hybrid distributed system, wherein the multi-energy coordinated control system comprises: An acquisition control unit (1), a master control unit (2) and a communication interaction unit (3); wherein, the acquisition control unit (1) is connected with the master control unit (2) through an acquisition control bus (4), and is connected with the AC/DC hybrid distributed system; the master control unit (2) controls the acquisition control unit (1) through the acquisition control bus (4) to acquire the AC/DC hybrid distributed system, and is connected with the communication interaction unit (3) through a communication interaction bus (5); the communication interaction unit (3) is connected with the AC/DC hybrid distributed system, and is in communication connection with an external device. By respectively connecting the acquisition control unit (1) and the communication interaction unit (3) with the AC/DC hybrid distributed system in the multi-energy coordinated control system, the information of the AC/DC hybrid distributed system can be acquired and controlled to implement the multi-energy coordinated control over the AC/DC hybrid distributed system.
Patent WO-2019086051-A1 (WO)
Inventor: CHEN RONG
IPC: C12N15/82
Filed: 2018-12-14
Abstract: 提供了一种含K85突变的植物EPSPS突变体及其编码基因和应用。该植物EPSPS突变体，与大肠杆菌EPSPS相比，该植物EPSPS突变体的氨基酸序列对应于大肠杆菌EPSPS的第85位的位点具有突变K85T或者K85I。该位点的突变可提高多种植物的EPSPS的不同突变体对草甘膦的抗性，同时保持自身的生物酶催化活性。转化该植物EPSPS突变体的植株或重组菌均能够在草甘膦存在的条件下正常生长。该植物EPSPS突变体可用于转基因作物培育。
Patent WO-2019120152-A1 (WO)
Inventor: YANG JIANBO
IPC: B25J9/16
Filed: 2018-12-17
Abstract: 一种构建模块化机器人的校正方法及系统和模块化机器人的控制方法，其在组装模块化机器人的过程中可以根据组装结构是否与目标结构相匹配而进行校正，避免了用户反复的组装工作，给用户带来了良好的使用体验感。
Patent WO-2020077849-A1 (WO)
Title: High-flatness, low-damage and large-diameter monocrystalline silicon carbide substrate, and manufacturing method therefor
Inventor: LIANG QINGRUI
IPC: B24B27/06
Filed: 2018-12-26
Abstract: The present application relates to the technical field of crystalline material processing. Disclosed are a high-flatness, low-damage and large-diameter monocrystalline silicon carbide substrate, and a manufacturing method therefor. The surface roughness of the substrate is less than or equal to 0.2 nm, a scratch die ratio of the substrate is less than 10%, a pit ratio is less than 0.1/cm 2 , and a bump ratio is less than 0.1/cm 2 . The manufacturing method comprises the following steps: performing fully-solidified abrasive treatment on monocrystalline silicon carbide, and then performing chemical mechanical polishing treatment to obtain the high-flatness, low-damage and large-diameter monocrystalline silicon carbide substrate, wherein the solidified abrasive treatment comprises line cutting and grinding wheel grinding, abrasive particles are solidified on cutting lines, and the abrasive particles are solidified on a grinding wheel. The high-flatness, low-damage and large-diameter monocrystalline silicon carbide substrate manufactured by the manufacturing method in the present application has low surface roughness, scratch die ratio, pit ratio and bump ratio, good surface data, and small thickness deviation, curvature, and warping degree.
Patent WO-2020133416-A1 (WO)
Inventor: CHANG YU
IPC: C08K3/22
Filed: 2018-12-29
Abstract: 一种离子橡胶弹性体，以所述离子橡胶弹性体的总重量为100%计，包括：橡胶基体材料10%~95%；液态离子材料1%~80%；纳米粉体材料0.1%~50%；添加剂0%~30%。所述离子橡胶弹性体，添加有纳米粉体材料，所述纳米粉体材料具有高比表面积特性，能够在橡胶基体材料中均匀分散；同时由于所述纳米粉体材料表面含有羟基，极性强，因此与液态离子材料具有较好的相容性，所述液态离子材料能够包覆在纳米粉体表面，并通过纳米粉体材料的负载实现液态离子材料在橡胶基体材料中的均匀分散，使得原先难以混合的液态离子材料和橡胶基体材料功能性复合，获得高离子导通性和高单位面积电容。
Patent WO-2020118822-A1 (WO)
Title: 一种显示装置
Inventor: CHEN MIN
IPC: H01L27/32
Filed: 2019-01-08
Abstract: 一种显示装置，包括显示面板（10）和柔性印刷布线基板（20）；显示面板（10）上设置有绑定结构，绑定结构包括多个沿显示面板（10）的宽度方向排布的第一连接端子（11），柔性印刷布线基板（20）与绑定结构电性连接；其中，每个第一连接端子（11）沿显示面板（10）的宽度方向的两条侧边倾斜设置，并且，沿显示面板（10）的宽度方向上相邻两个第一连接端子（11）的相邻侧边相互平行。通过将第一连接端子（11）和第二连接端子（21）的侧边倾斜设置，同时使相邻两个第一连接端子（11）的相邻侧边平行，在实现相同分辨率的情况下增大第二连接端子（21）的有效安全偏移量，从而防止第二连接端子（21）将相邻的第一连接端子（11）导通造成短路，从而提高绑定良率。
Patent WO-2019141147-A1 (WO)
Title: Reference resource indication techniques in wireless communications
Inventor: HAO CHENXI
IPC: H04L5/00
Filed: 2019-01-14
Abstract: Methods, systems, and devices for wireless communications are described. One or more reference signals may be transmitted by a user equipment (UE) that may be used by a base station for channel estimation and determination of one or more parameters to be used for subsequent uplink transmission of the UE. The base station may transmit an indication of uplink transmission parameters in an uplink grant that is transmitted to the UE. The UE may modify one or more subsequent reference signal transmissions based on the uplink grant received from the base station and a timing of the uplink grant relative to the one or more subsequent reference signal transmissions. The base station may determine a timing for the uplink grant based on a timing associated with the reference signal transmissions from the UE.
Patent WO-2019149150-A1 (WO)
Title: Application processing method and device, and computer storage medium
Inventor: SU YONG
IPC: G06F21/56
Filed: 2019-01-25
Abstract: The present invention provides an application processing method and device, and a computer storage medium. The method comprises: running WebView related to an application in an independent process. In the present invention, WebView is separate from an application master process, allowing WebView to run in an independent process. In this way, even an exception occurs to WebView, the application master process will not be affected to cause the problem of application stuck.
Patent WO-2020001023-A1 (WO)
Title: 用户显示界面的多视图联动方法、计算设备及存储介质
Inventor: QI WANGMING
IPC: G06F3/0481
Filed: 2019-01-28
Abstract: 一种用户显示界面的多视图联动方法、计算设备及存储介质。其中，用户显示界面至少包含第一视图和第二视图，第二视图覆盖设置在第一视图之上，且第二视图中与第一视图的重叠区域的颜色属性为透明色；该方法包括：监测用户显示界面内的触发事件（S210）；判断触发事件是否为预设触发事件（S220），若是，将触发事件分发给第二视图，由第二视图响应该触发事件（S230）；在第二视图响应触发事件的过程中，第二视图将实时响应结果传递给第一视图，使第一视图根据实时响应结果实现联动（S240）。
Patent WO-2019154249-A1 (WO)
Title: Nitrilase mutant, construction method therefor, and application thereof
Inventor: ZHENG RENCHAO
IPC: C12N15/70
Filed: 2019-01-31
Abstract: Provided are a nitrilase mutant, a construction method therefor, and an application thereof in the synthesis of a pregabalin chiral intermediate. Brassica rapa nitrilase BrNIT and Arabidopsis thaliana nitrilase AtNIT are respectively used as parents, and by means of peptide fragment replacement, positions 226-286 of a BrNIT amino acid sequence and positions 225-285 of an AtNIT amino acid sequence are replaced with peptide fragments at positions 225-285 of Arabis alpine nitrilase AaNIT, so as to obtain nitrilase mutants BrNIT 225-285 and AtNIT 225-285 represented by amino acid sequences such as SEQ ID NO. 1 or SEQ ID NO. 3. Compared with wild-type nitrilase, the nitrilase mutants provided significantly improve the activity for catalytic hydrolysis of racemic isobutylsuccinonitrile and product stereoselectivity, can meet requirements of industrial application, and has good application prospect in efficient catalysis of racemic isobutylsuccinonitrile for the synthesis of 3-cyano-5-methylhexanoic acid.