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retrievable hydraulic-set casing packer
dril. 可回收液力坐封套管封隔器
oil 可收回液压坐封套管封隔器
retrievable: 96 phrases in 13 subjects
Drilling12
Earth sciences2
Electronics1
Explosives and Explosive Ordnance Disposal2
Geophysics4
Information technology1
Mechanics3
Mining12
Navigation3
Oil / petroleum27
Space7
Technology21
Telecommunications1

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