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reverse-circulation well clean-up
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reverse-circulation well clean-up
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reverse-circulation well clean-up
反循环洗井
利用泵从贮浆池中将洗井液压入钻具和井壁之间的环空直达工作面冲洗刀具、冲洗井底的方式。
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orthopyroxene
orthopyroxenite
orthoradioscopy
orthorectifier
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orthorhombic crystal system
orthorhombic system
orthoscope
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Orthosie
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orthotetrahedral quartic
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