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井下落物
释义
井下落物
Encyclopedia
工学
钻井复杂事故种类
释
downhole junk
井下落物
钻井时,形状不规则且无打捞部位可与打捞工具连接的物体(如钻头牙轮、刮刀片、井口工具等)落入井内的现象。
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helical scan
helical seam submerged-arc welded steel pipe
helical spin order
helical structure
helical surface
helical symmetry
helical texture
helical welded pipe process
helicase
helicene
helices
helicity
helicline
Helicobacter pylori genome
Helicobacter pylori infection
helicograph
helicoid
helicoidal motion
helicoidal surface
helicoid cyme
helicon
heliconia family
helicon plasma thruster
helicon wave
helicon wave plasma
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