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冲击旋转钻井
释义
冲击旋转钻井
Encyclopedia
工学
钻井方法
释
percussion and rotary drilling
冲击旋转钻井
在普通旋转钻进的基础上同时使用冲击器,使钻头在冲击动载和静压旋转的联合作用下破碎岩石的钻井方法。
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Works of Talented Ladies
Works of the Four Master Poets of the Yuan Dynasty
Works of Xin Qiji, block-printed edition by Guangxin Academy (1299), third year of the Dade era, Yuan Dynasty
Works of Yeoyudang
work space
workspace
workspace design
Works Progress Administration
workstation
work stress
work-study education
Works Written in My Humble Library
work system of project engineering standardization
work-technic education
Work Values Inventory
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world advertising conference
World Affairs
World Agroforestry Centre
World Air Routes
World Air Sports Federation
World Alliance of Reformed Churches (Presbyterian and Congregational)
World Anti-Doping Agency
World Anti-Doping Code
World Aquaculture Society
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