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Geophysics
containing
封
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English
发射检测用密
封
罩
sealed housing for emission detection
多层
封
装
multilayered package
套管
封
堵曲线
collar exclusion curve
封
装的电子线路
packaged electronic circuit
跨式
封
隔器钻杆测试
straddle packer drill stem test
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