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文中介绍了YS系列绳索取心钻杆柱的特点、钻杆材质及钻杆柱的规格尺寸与结构设计,讨论了钻具总成和打捞器的设计特点和性能.
In this paper, the characteristics of YS series coring drill string, the material of the drill string and the dimension and structure design of the drill string are introduced. The design features and performance of the drill assembly and the salvage are discussed.