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复合式钻头
释义
复合式钻头
Encyclopedia
工学
钻井装备
释
hybrid bit
复合式钻头
由聚晶金刚石复合片(PDC)刀翼和牙轮复合而成的钻进工具。又称复合钻头或混合钻头。
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Weingarten surface
Weingarten transformation
Weining Beishan
Weining pingyuan
Weining sheep
Weining Yizu Huizu Miaozu Zizhixian
Weinland effect
Weinreb ketone synthesis
Weinreich, Uriel
Weinstein
Weinstein theorem
Weipa
Weipa bauxite deposit
weiqi
Wei Qilin
Wei Qimei
Wei Qing
Wei Qingzhi
Wei Qixian
Wei queen of disorderly
weir
weird
weird number
Wei Ren
Weir flow
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