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用于地质、石油、天然气钻完井和修井作业中拧紧或卸开钻柱、套管、油管和井下工具等连接螺纹的井口工具。
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Organization of Information
organization of investment fund
organization of Jiaofang
organization of Junrongzhi
Organization of Latin American Solidarity
organization of project management
organization of state security
organization of train operation
Organization of World Heritage Cities
organization performance
organization, preparation and approval of urban master plan
organization public opinion
organization regulations of municipal public works Commission
organization resources
organization rights
organizations other than legal person
organization structure of construction project
organization subculture
organization symbol
organization theory of policy implementation
organization vertical communication
organized capitalism
organized innovation
organized mobs' coercion on the Parliament
organized technology of bioleaching microbial species
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