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for subject
Drilling
containing
保压
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Chinese
English
保压
取心
pressure maintenance coring
保压
取心筒
pressure retaining core barrel
保压
取心筒
pressure core barrel
保压
密闭取心
pressure retaining coring
保持压力不变
keep up pressure
双保险高压阀连接
控制装置
double proofed connection
密闭
保压
取心
core drilling with keeping formation pressure
部分保持压力
partial pressure maintenance
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