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for subject
Mining
containing
single-zone
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in specified order only
English
Chinese
dual-porosity
single zone
双孔隙度单层
single trip, dual zone
gravel pack
一次起下
井
作业、双层
砾石充填作业
single trip multi-zone
gravel pack
一次起下多层作业
砾石充填
single-trip, dual-zone gravel pack system
一次起下
井
作业、双层砾石充填系统
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