baber/WOPTO huggingface dataset:
Patent WO-2013023406-A1 (WO)
Title: Hand-driven bicycle
Inventor: KWOK YAU CHEUNG
IPC: B62M1/14
Filed: 2011-10-24
Abstract: A hand-driven bicycle including a handlebar (1), a vertical tube (2), a flywheel(8) mounted on the front wheel and a steel wire (16). The first end of the vertical tube is fixedly connected with the handlebar. The second end of the vertical tube is rotatably connected with a fork arm (6). A rocker arm (14) is extended from the second end of the vertical tube towards the front wheel's direction. The vertical tube is fixed together with the rocker arm, which form the power lever. The first end of the steel wire is fastened at the end location (7) of the fork arm. The second end of the steel wire is fixed on the flywheel of the front wheel around a pulley(15) on the free end of the rocker arm. While the handlebar is moved back and forth, the free end of the rocker arm is also moved back and forth, which drives the flywheel rotate through the steel wire so as to drive the front wheel run. The hand-driven bicycle enhances its speed and brings the cyclists' body movement.
Patent WO-2013000249-A1 (WO)
Title: 一种颗粒消泡剂及其制备方法
Inventor: CHI YUEQIN
IPC: B01D19/04
Filed: 2011-12-14
Abstract: 一种颗粒消泡剂的制备方法，该颗粒消泡剂由占总质量的55-75%的载体、15-35%的有机硅乳液、3-10%的结构剂和2-10%的溶剂组成，制备该颗粒消泡剂的方法为：（1）先将载体A1加入到混合器中，然后向其中加入有机硅乳液B1，搅拌均勾；（2）将载体组分A2加入到（1）得到的混合物中，并搅拌均勾；（3）往（2）得到的混合物中加入有机硅乳液B2，搅拌混合均勾后，加入溶剂搅拌均勾；（4）将（3）得到的混合物造粒、烘干，即得。
Patent WO-2013188995-A1 (WO)
Title: Molding method for a ducted body with internal accessory
Inventor: GAO DEJUN
IPC: B29C49/42
Filed: 2012-07-23
Abstract: A molding method for a ducted body with internal accessory (7) comprises the following steps: 1) firstly, setting the internal accessory (7) on the fixing bar (8) of the internal accessory; 2) closing the stretching mechanism (5); 3) blanking, tubular blank (2) being extruded from the top end and descending slowly when the stretching mechanism (5) is completely closed; 4) in course of the descending of the blank (2), the stretching mechanism (5) opening and forming an opening for the passing of the internal accessory (7); 5) ascending the internal accessory (7), the internal accessory (7) ascending to the final position through the opening and completing the ascending process of the internal accessory (7), 6) closing the clamping boards (4), completing the pre-blowing process by pre-blowing the blank (2); 7) half closing the mold (1-1，1-2); 8) the fixing bar (8) of the internal accessory exiting from the mold mechanism; 9) completely closing the mold (1-1，1-2); 10) high pressure blowing, high pressure air blowing into the blank (2) to finish the process of the blowing; 11) taking out the ducted body with internal accessory (7). Above method reduces environmental pollution and protects the environment.
Patent WO-2012100688-A1 (WO)
Title: 打印介质标记的判断方法及装置、打印装置
Inventor: XING YUEQI
IPC: B41J11/46
Filed: 2012-01-13
Abstract: 本发明公开了一种打印介质标记的判断方法及装置、打印装置。其中，该打印介质标记的判断方法包括：获取检测数据，其中，检测数据包括第一检测数据和第二检测数据并且第一检测数据和第二检测数据为对应于打印介质的不同打印位置的检测数据；以及根据第一检测数据和第二检测数据的关系确定打印介质上的标记。通过本发明，能够解决现有技术中在更换打印介质时，对打印介质标记进行判断需要频繁地进行阈值校验的问题，进而能够提高打印介质标记的判断效率。
Patent WO-2012167625-A1 (WO)
Title: Distributed storage system and implementation method of time stamp thereof
Inventor: HU HUANHUAN
IPC: H04W56/00
Filed: 2012-01-19
Abstract: The invention relates to a distributed storage system and an implementation method of the time stamp thereof. Said method comprises: every server node of said system maintains a local time stamp, said every server node periodically transmits data packages carrying the current time stamp locally maintained to other server nodes in the system, and said every server node updates the local time stamp based on the received data packages; said system comprises a plurality of server nodes, and said server node comprises a time stamp maintenance module, a time stamp update module and a time stamp storage module. The invention has very high reliability.
Patent WO-2012100745-A1 (WO)
Inventor: SU WEI
IPC: H04B7/06
Filed: 2012-01-29
Abstract: La présente invention concerne un procédé de commutation de mode multiple entrée multiple sortie (MIMO) et un équipement d'utilisateur (UE) correspondant. Dans les modes de réalisation de la présente invention, l'UE peut acquérir une matrice de pré-codage optimale et il peut ensuite obtenir une première probabilité invariante selon la matrice de pré-codage optimale acquise ; l'UE détermine s'il peut entrer ou non dans un mode MIMO à boucle fermée en jugeant la relation de taille entre la première probabilité invariante et un premier seuil, si l'entrée est possible, alors l'UE envoie un premier message de rapport à une station de base de sorte que l'UE puisse entrer dans le mode MIMO à boucle fermée dans des conditions de canal appropriées ; par ailleurs, l'UE fournit un premier message de rapport qui exige la consommation de très peu de ressources de spectre d'interface radio en faveur de la station de base uniquement lorsque l'UE est capable d'entrer dans le mode MIMO à boucle fermée, ce qui économise des ressources de spectre d'interface radio.
Patent WO-2012103805-A1 (WO)
Title: Système et procédé permettant de calculer un trajet à commutation d'étiquette en point à point traversant plusieurs domaines
Inventor: CHEN HUAIMO
IPC: H04L45/50
Filed: 2012-01-31
Abstract: La présente invention concerne un appareil qui comprend une pluralité d'éléments de calcul de chemin (PCE) associés à une pluralité de domaines inter-couplés et conçus pour communiquer avec un client de calcul de chemin (PCC) associé à l'un des domaines et pour mettre en œuvre un calcul de chemin de recherche vers l'avant (FSPC) pour un chemin préféré traversant les domaines à partir d'un nœud source dans un domaine source de la pluralité de domaines inter-couplés vers un nœud de destination dans un domaine de destination de la pluralité de domaines inter-couplés, le chemin préféré étant calculé sans utiliser d'ordre déterminé pour les domaines, du domaine source au domaine de destination.
Patent WO-2012155640-A1 (WO)
Title: Isdn业务处理方法及装置
Inventor: ZHAO QIUHE
IPC: H04L12/66
Filed: 2012-03-16
Abstract: 本发明公开了一种ISDN业务处理方法及装置，该方法包括：接入网关对ISDN业务的消息进行解码；根据解码的结果对该ISDN业务进行处理。该发明解决了相关技术中存在的上行业务接口与软交换通讯中断时，ISDN业务也会中断的问题，达到了在上行业务接口与软交换通讯中断时，ISDN业务不会中断的效果。
Patent WO-2013056541-A1 (WO)
Title: Method for producing lithium iron phosphate by using lithium ore as lithium source
Inventor: WANG PING
IPC: H01M4/58
Filed: 2012-04-18
Abstract: The present invention relates to a method for producing lithium iron phosphate by using lithium ore as a lithium source, belongs to the field of materials of lithium ion batteries, and specifically relates to a method for producing lithium iron phosphate by using lithium ore as a lithium source. The technical scheme of the present invention comprises: (1) treating lithium ore, to obtain lithium source solution; (2) letting ferrite solution, phosphorus source solution and the lithium source solution prepared in the step (1) to be subject to a liquid phase reaction, cooling the solution, filtering the solution, and then collecting a filter cake; and (3) washing the filter cake, adding water into the filter cake to form slurry, adding a sugar raw material, uniformly mixing the mixture, drying the mixture, then calcining the mixture under the protection of inert gas, to obtain carbon-coated lithium iron phosphate. The present invention produces the lithium iron phosphate by using the lithium ore as the lithium source, the content of impurities such as Ca 2+  and Mg 2+  in the lithium iron phosphate is removed and controlled; the prepared lithium iron phosphate has advantages such as high purity, excellent electrochemical performance, high stability, and high consistency; 1 C discharge capacity can be over 140 mAh/g; and the comprehensive cost of the lithium iron phosphate can be saved by over 12,000 Yuan per ton.
Patent WO-2013060127-A1 (WO)
Title: 基于多单元集成抽屉式功率模块的一体化集约式svg柜
Inventor: WANG HAO
IPC: H02J3/18
Filed: 2012-04-19
Abstract: 一种基于多单元集成抽屉式功率模块的一体化集约式SVG柜，包括控制柜（4）、功率柜（5）、和充电柜（7），该功率柜包括多个功率单元抽屉（6）竖向层叠布置，各抽屉功率单元间串联连接，每列对应一相，三相功率柜为左右结构布置的一体化集成结构。功率柜后部设有支撑电容安装部分（9），按照设备容量的需求扩展的电容部分与功率单元为分体的结构。
Patent WO-2013159269-A1 (WO)
Title: Driving force switching apparatus assembled to rotating shaft
Inventor: TSENG SHENG-TSAI
IPC: F16H3/087
Filed: 2012-04-23
Abstract: A driving force switching apparatus assembled to a rotating shaft (71) is used for providing power transmission and switching, and has a simple structure. The driving force switching apparatus comprises a rotating shaft (71) connected to a power source (70), the rotating shaft (71) being provided with a first driving mechanism (10), a second driving mechanism (20), and a engagement sleeve (30) rotating along the rotating shaft (71). The engagement sleeve (30) can move on the rotating shaft (71) and be selectively engaged with the first driving mechanism (10) and the second driving mechanism (20) for outputting the power to an output shaft (71b).
Patent WO-2013166738-A1 (WO)
Title: 一种液晶显示装置的光学膜片及液晶显示装置
Inventor: KUO YICHENG
IPC: G02B5/00
Filed: 2012-05-16
Abstract: 一种液晶显示装置的光学膜片及液晶显示装置，光学膜片（200）包括中间部分的显示区和边缘部分的非显示区，非显示区设有遮光层（210）。光学膜片的非显示区刚好能覆盖住中框（100）表面，直接在光学膜片的非显示区设置遮光层可防止中框在拼接处漏光。优点在于利用现有的材料即可实现中框的遮光，简单实用，成本低。
Patent WO-2012174963-A1 (WO)
Inventor: ZHANG JUNHUI
IPC: H04L12/56
Filed: 2012-05-17
Abstract: La présente invention concerne un procédé et un dispositif permettant la sélection d'un PTP LSP. Le procédé consiste à faire circuler la capacité 1588 et la capacité de réservation de largeur de bande de chaque nœud et à sélectionner un chemin commuté par étiquettes point à point (PTP LSP) selon un résultat de circulation. Le PTP LSP sélectionné comporte le plus petit nombre de nœuds qui ne supportent pas la capacité 1588 ou la capacité de réservation de largeur de bande. La solution technique fournie par la présente invention permet d'améliorer davantage la qualité de récupération d'horloge ainsi que l'applicabilité et la fiabilité du service de synchronisation.
Patent WO-2013020468-A1 (WO)
Inventor: CHEN TING
IPC: C08F2/48
Filed: 2012-07-31
Abstract: 一种UV光辐射自由基聚合新材料技术领域的含有胺基酮光引发剂化合物1-([1，1'-联苯基]-4-基)-2-甲基-2-吗啉基丙垸-1-酮（其相应的化合物英文名称为1-([1,1'-biphenyl]-4-y1)-2-methy1-2-morpholinopropan-1-one)的含烯不饱和化合物体系进行UV自由基光聚合固化应用用途。与含有传统市售Irgacure907光引发剂产品的同类体系相比，该化合物在光固化过程中展现了优异的耐黄变性，低残余不良气味，高引发活性，以及低成本经济竞争力。
Patent WO-2013044730-A1 (WO)
Title: 一种策略与计费规则的服务质量更新方法及系统
Inventor: WU JINHUA
IPC: H04W4/24
Filed: 2012-09-12
Abstract: 一种策略与计费规则的服务质量更新方法及系统，该方法包括：终端通过与触发功能交互以请求或确认所述终端所访问的业务的服务质量的更新；以及所述触发功能与策略与计费功能(PCRF)交互，所述PCRF根据所述触发功能的请求执行IP连接接入网会话修改，更新所述业务的服务质量。本方案可以保证用户使用和运营商没有合作关系的第三方应用提供商的业务时，能根据用户要求来提供业务服务质量。
Patent WO-2014059623-A1 (WO)
Inventor: BORNEMANN PAUL C
IPC: B22D17/22
Filed: 2012-10-17
Abstract: Metal alloy injection molding techniques are described. In one or more implementations, these techniques may also include adjustment of injection pressure, configuration of runners, and/or use of vacuum pressure, and so on to encourage flow of the metal alloy through a mold. Techniques are also described that utilize protrusions to counteract thermal expansion and subsequent contraction of the metal alloy upon cooling. Further, techniques are described in which a radius of edges of a feature is configured to encourage flow and reduce voids. A variety of other techniques are also described herein.
Patent WO-2014063337-A1 (WO)
Title: Method, device and system for redirecting air interface connection between systems
Inventor: XING PINGPING
IPC: H04W36/14
Filed: 2012-10-26
Abstract: Disclosed are a method, a device and a system for redirecting an air interface connection between systems. The method comprises: a first-standard network device receiving a connection request message sent by a user equipment (UE) in a first-standard cell and performing redirection judgment; after determining to redirect the UE to a second-standard cell managed by a second-standard network device, the first-standard network device sending a notification message to request the second-standard network device to allocate a connection establishment parameter to the UE; the first-standard network device receiving a response message that is sent by the second-standard network device and carries the connection establishment parameter, and sending the connection establishing parameter to the UE, so that the UE establishes a connection to the second-standard network device according to the connection establishment parameter. By means of the embodiments of the present invention, signaling overhead in a redirection process is saved, a connection establishment delay is shortened, and user experience is improved.
Patent WO-2014071599-A1 (WO)
Title: Procédés et appareils de récupération de connexion de commande de ressources radio
Inventor: LEI YIXUE
IPC: H04W76/02
Filed: 2012-11-09
Abstract: La présente invention concerne un procédé et un équipement d'utilisateur associé destinés à une récupération de connexion de commande de ressources radio. Dans un exemple de mode de réalisation, le procédé comprend les étapes consistant à détecter une défaillance de liaison radio d'une liaison radio entre un premier équipement d'utilisateur et un nœud d'accès radio ; à informer un second équipement d'utilisateur qui communique avec le nœud d'accès radio par le biais du premier équipement d'utilisateur de suspendre un état de connexion de commande de ressources radio ; à exécuter une procédure de rétablissement de connexion de commande de ressources radio avec le nœud d'accès radio ; et à informer le second équipement d'utilisateur de reprendre l'état de connexion de commande de ressources radio si le rétablissement de connexion de commande de ressources radio réussit. En outre, l'invention concerne un procédé et un équipement d'utilisateur associé utilisés avec la récupération de connexion de commande de ressources radio.
Patent WO-2015032010-A1 (WO)
Inventor: ZHANG XIN
IPC: F01B7/02
Filed: 2013-09-03
Abstract: La présente invention est la suivante : sur la base du principe de force de levier d'économie d'effort, à l'aide de mouvements alternatifs de parties des courses de deux pistons à l'intérieur d'un cylindre, une poussée générée pendant un allumage de carburant est ajustée de façon à être appliquée à une position angulaire d'un levier d'économie d'effort de vilebrequin, de façon à obtenir, dans la plus grande mesure du possible, les buts de rendement et de couple accrus et de consommation d'énergie réduite.
Patent WO-2014079179-A1 (WO)
Title: Cutting torch for cutting ultrahigh-thickness 2000-3500 mm low-carbon and low-alloy steel ingot and cutting process of the cutting torch
Inventor: HAN YONGKUI
IPC: F23D14/46
Filed: 2013-03-18
Abstract: The present invention provides a cutting torch for cutting an ultrahigh-thickness 2000-3500 mm low-carbon and low-alloy steel ingot and a cutting process of the cutting torch, belonging to the technical field of oxygen cutting metal. The cutting torch is characterized in that preheating oxygen and propane gas are not mixed inside the cutting tip of the cutting torch at first, a preheating oxygen duct and a gas duct both are inclined toward the axis of the cutting torch, a large-flow cutting oxygen cutting tip is adopted and the diameter of the throat part of the cutting tip is 17-22 mm, and each gas duct is designed into a structure with the lower part thereof slightly spread, the diameter of the inlet thereof is 4.5 mm, the spreading taper angle is 1.146° and the length of the spreading section is 8 mm. The cutting torch provided by the present invention and the cutting process are suitable for good-quality and high-efficiency cutting of the ultrahigh-thickness 2000-3500 mm low-carbon and low-alloy steel ingot.
Patent WO-2014146280-A1 (WO)
Title: Data transmission method, base station, and user equipment
Inventor: WANG JIAN
IPC: H04W72/08
Filed: 2013-03-21
Abstract: Provided in embodiments of the present invention are a data transmission method, a base station, and a user equipment (UE). The base station selects a TBS that corresponds to a modulation and coding scheme level and corresponds either to the number of first physical resource block pairs or the number of second physical resource block pairs, where the number of the second physical resource block pairs is a product of the number of the first physical resource block pairs and a set conversion factor. This implements TBS selection for the base station, and thus allows the base station to achieve an expected coding rate when transmitting service data to the UE on the basis of the selected TBS.
Patent WO-2014019375-A1 (WO)
Title: Door lock handle bidirectional positioning mechanism
Inventor: MIN YU
IPC: E05B3/06
Filed: 2013-03-29
Abstract: A door lock handle bidirectional positioning mechanism comprising: a handle component (1), a lock face (2), and a resetting component (3). The lock face (2) is provided thereon with a positioning rod (21) and a round hole (22), while the handle component (1) is provided thereon with a square structure, and the handle component (1) is fitted into the round hole (22) of the lock face (2) and is allowed to rotate around the round hole (22). One end of the resetting component (3) is fitted onto the positioning rod (21) of the lock face (2), while the other end is engagingly arranged onto the square structure of the handle component (1). The resetting component (3) is driven by the handle component (1).
Patent WO-2014161121-A1 (WO)
Title: 一种具有悬空电网的空气过滤器
Inventor: ZHAO BING
IPC: B01D46/00
Filed: 2013-03-31
Abstract: 一种具有悬空电网的空气过滤器，包括过滤框，网底框，过滤框中设有过滤纸，过滤框与网底框配合连接，网底框置于净化机出风口上方，出风口上端设有风道支撑板，过滤纸下方设有正电金属丝，正电金属丝下方设有下放电网，正电金属丝安装在正电组件上，正电组件通过绝缘支撑柱固定安装于风道支撑板上，下放电网通过支柱固定在风道支撑板上。产品工作时，有效防止了正电金属丝通过灰尘杂质与下放电网打火的事故出现，避免产生安全隐患。下放电网周边不与网底框接触，只通过支柱连接于离子丝组件之下，使高压电无处打火，提高了设备使用的安全性。
Patent WO-2013177977-A1 (WO)
Title: 一种解决测量冲突的方法及装置
Inventor: LIU JINNAN
IPC: H04W24/10
Filed: 2013-04-09
Abstract: 本发明公开了一种解决测量冲突的方法及装置，涉及通信技术领域，能够解决RSTD同频测量与异频测量的测量冲突，保证RSTD同频测量的成功，从而保证了对用户设备的成功定位。本发明包括：获取当前参考信号时间差RSTD同频测量观察窗以及当前异频测量间隙GAP；判断所述当前RSTD同频测量观察窗与所述当前GAP是否存在重叠时间；若确定所述当前RSTD同频测量观察窗与所述当前GAP存在重叠时间，则按照配置策略进行RSTD同频测量和GAP异频测量。本发明实施例主要应用于解决RSTD同频测量与GAP异频测量冲突的过程中。
Patent WO-2013155970-A1 (WO)
Title: Artificial heart valve and valve scaffold thereof
Inventor: LI DIANYUAN
IPC: A61F2/90
Filed: 2013-04-18
Abstract: Disclosed is an artificial heart valve and valve scaffold thereof (10), wherein the valve scaffold (10) is an elastic scaffold capable of shrinking axially and being hollow shaped, and a U-shaped opening (30) is arranged at the position of the valve scaffold (10) corresponding to a valve leaflet. By setting the hollow shape and having the U-shaped opening (30) on the valve scaffold (10), the metal structure of the whole heart valve is decreased, which benefits the loading and recovering of the intervention and implantation, and reduces rejection by the human body of the implant.
Patent WO-2014044062-A1 (WO)
Title: Dual phase column membrane protein micro-reactor and use thereof
Inventor: ZHANG LIHUA
IPC: C07K1/04
Filed: 2013-06-07
Abstract: The present invention relates to a dual phase column membrane protein micro-reactor which can achieve acidic and alkalinity displacements for a reaction system; the micro-reactor uses a cation exchange material and an anion exchange material as stationary phases, the two stationary phases being sequentially filled into the same container, and can achieve sample pretreatment processes of trapping in situ, pH displacement, reduction, alkylation, enzymolysis of the membrane protein sample. The device has advantages of a high recovery rate, being simple, efficient, fast and so on.
Patent WO-2014026526-A1 (WO)
Title: Natural person information setting method and electronic device
Inventor: MAI JUNMING
IPC: G06F17/00
Filed: 2013-07-19
Abstract: Disclosed are a natural person information setting method, an account information providing method and an electronic device. The natural person information setting method includes the steps of: according to an association degree index and an exclusive degree index of each account and other accounts, determining an associated set of each account; performing convergence processing on all associated sets, so as to allow the associated accounts in any two associated sets subjected to the convergence processing not to be repeated; and setting the same natural person information for the associated accounts in one and the same associated set subjected to the convergence processing, and performing one and the same natural person setting on the associated accounts in one and the same associated set according to the natural person information. Also disclosed are an account information providing method and an electronic device.
Patent WO-2014015825-A1 (WO)
Inventor: ZHANG WENHU
IPC: F21V9/08
Filed: 2013-07-26
Abstract: L'invention concerne une lampe à signal à diode électroluminescente (DEL) qui comprend : au moins une DEL blanche (10) et au moins un filtre de lumière (20). Ledit au moins un filtre de lumière (20) est agencé sur un trajet de rayon lumineux de ladite au moins une DEL blanche (10), de façon à filtrer au moins une partie des rayons lumineux émis par la DEL blanche (10) afin d'obtenir une lumière monochromatique colorée. Une lampe à signal de lumière colorée est formée par l'utilisation d'une DEL blanche, de telle sorte que l'efficacité d'éclairage est améliorée ; de plus, la structure est simple, et le coût est réduit.
Patent WO-2014101714-A1 (WO)
Title: 手机驱动机器人
Inventor: LI BO
IPC: H04M1/72454
Filed: 2013-12-19
Abstract: 一种手机驱动机器人系统，包括采集机器人信息并处理信息的手机A，处理手机A通用接口信号与执行机构部件驱动信号转换的核心接口单元；执行手机A发送的指令信号的执行机构部件；通过无线网路远程控制手机A和接收手机A反馈信息的远端主动控制手机B或电脑；手机B和电脑自带的输入设备和附加的辅助输入设备；手机A、手机B和远端主动控制电脑的功能软件。该手机驱动机器人系统可实现远程控制机器人，容易大量普及家用。
Patent WO-2014183463-A1 (WO)
Inventor: YU YANYUN
IPC: B63B59/02
Filed: 2014-04-08
Abstract: La présente invention concerne une défense sphérique électromagnétique de navire et son procédé d'utilisation. Un dispositif formant défense sphérique comporte des électroaimants (2) disposés des deux côtés d'une défense sphérique en caoutchouc (1); un câble électrique (5) et une prise femelle d'alimentation en courant étanche à l'eau (6) étant utilisés pour établir une connexion électrique après connexion en parallèle des bobines électromagnétiques (2a) de tous les électroaimants (2). Le dispositif formant défense sphérique est utilisé dans une situation d'ancrage de deux navires ou dans une situation d'accostage rapide d'un vaisseau sous voiles, permet d'établir une protection entre deux navires se heurtant violemment et permet d'empêcher que les deux navires ne dérivent en s'écartant l'un de l'autre. Ladite défense sphérique peut être utilisée pour un accostage rapide et fiable de navires tels que des navires de ravitaillement, des navires médicaux et des navires de ravitaillement en combustible GNL, de même que d'autres navires ou pour d'importantes structures marines telles que des plates-formes de forage en mer.
Patent WO-2016000090-A1 (WO)
Title: Oil extraction method of suppressing escape in co2 flooding process in low-permeability fractured oil reservoir by means of two-stage plugging
Inventor: HOU JIRUI
IPC: E21B33/10
Filed: 2014-09-23
Abstract: A method of suppressing escape in the CO 2  flooding process in a low-permeability fractured oil reservoir by means of two-stage plugging, to improve oil extraction efficiency, the two-stage plugging comprising: injecting a strong adhering system with natural modified high molecular material as a main agent, and forming a high-strength adhesive after waiting on cement setting to plug fractures; and utilizing fatty amine as a plugging agent to plug the escaping of low-viscosity CO 2  caused by a relatively high-permeability layer in the low-permeability matrix. The two-stage plugging technology effectively controls the escaping in the CO 2  flooding process in the low-permeability fractured oil reservoir and expands the spreading volume, thus improving the oil recovery efficiency.