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perforation hole
释义
perforation hole
Encyclopedia
工学
射孔完井
释
perforation hole
炮眼
在射孔完井过程中,由射孔弹燃爆后形成的穿透套管、水泥环直到地层一定深度处的孔眼。
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Orange Walk
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Orango Islands National Park
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Oratory
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ORB
orb
orbicularis
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