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continuous whipstock
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continuous whipstock
Encyclopedia
理学
定向钻进
释
continuous whipstock
连续造斜器
利用专门机构对钻头施加固定方向侧向力,或使钻头相对于钻孔轴线偏转一定角度,实现连续偏斜钻进的工具。
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welding inspection
welding material
welding metallurgy
welding nondestructive inspection
welding nondestructive test
welding of dissimilar metal
welding of magnesium alloys
welding of metal
welding of superalloy
welding qualification and certification
welding remanufacturing
welding robot
welding stress
welding thermal cycle
welding transformer
welding under nuclear environment
welding wire
welfare breeding
Welfare centre
welfare facilities for the disabled persons
welfare facility room
welfare fish separating
welfare home for the elderly
welfare institution
Welfare pluralism theory
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