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矿山钻井法
释义
矿山钻井法
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特殊凿井法
释
shaft boring
矿山钻井法
用钻井机钻凿竖井井筒的特殊凿井法。在地面采用大直径钻井机向地层钻进竖井,以洗井液护壁并排渣,悬浮下沉预制井壁作为永久支护,实现人员不下井的机械化凿井方法。
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glass melting furnace
glass mosaic
glass network former
glass network intermediate
glass network modifier
glass-painting
glass phase
glass physical evidence
glass-plate capacitor
glass preparation
glass-prism spectrograph
glass-prism spectroscope
glass raw materials
Glass Refractive Index
glass scintillator
glass semiconductor
glass semiconductor, vitreous semiconductor
glass slide
glass smelting
glass solidification
glass spherule
glass state
glass state and glass transition of polymers
Glass-Steagall Act
glass-steam(liquid) thermometer
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