... double-bore well 双筒井 double-tube core 岩心管 doubly plunging fold 双倾伏褶曲 ...
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double-tube core barrel 双筒取心筒
double tube core barrel 复式岩心管
double tube core barrel sampler 回转取样器 ; 双重岩芯管取样器
rigid-type double-tube core barrel 双动双层岩心管
swivel-type double tube core barrel 单动双层岩心管
single swiveling double-tube core barrel 单动双管取心器
double e tube core barrel 复式岩心管
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Cataclasite series; Rate of core recovery; Single Rotary and Double Tube core Barrel, Structure of drilling tool; drilling technology.
碎裂岩系；取芯率；双管单动钻具；钻具造型；钻探工艺。
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