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Terms for subject Mining containing 双 层 | all forms | in specified order only
ChineseEnglish
一次起下井作业、双层砾石充填作业single trip, dual zone gravel pack
一次起下井作业、双层砾石充填系统single-trip, dual-zone gravel pack system
下部双层dual lower casing
下部双层套管dual lower casing
下部双层油管dual lower tubing
双孔隙度单层dual-porosity single zone
双层串心管double pipe

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