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directional well tool
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directional well tool
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工学
定向井工具
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directional well tool
定向井工具
使钻头沿着预定的井斜和方位钻进实现导向钻井的用具,以及测量井斜角、方位角和工具面等参数仪器的总称。
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chemical cycle of sulfur
chemical database
chemical decanning
chemical decladding
chemical decladding; chemical decanning
chemical decontamination
chemical defense
chemical defense of insect
chemical degradation
chemical degradation of polymers
chemical deodorant method of sediment
chemical diffusion
chemical digestion
chemical diversity synthesis
chemical doping white light-emitting polymer
chemical dosimeter
chemical dynamics
chemical dynamics of aquatic system
chemical ecology
chemical effect in nuclear reaction
chemical electronic business
chemical element
chemical embryology
chemical endemic disease
chemical energy
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