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封隔器 fēnggéqì
dril. pack-off
mining. packer
tech. excluder; packer-plug
斯伦贝谢公司 PT 封隔器
mining. Positest packer
封隔器: 367 phrases in 9 subjects
Drilling80
Earth sciences2
Engineering geology3
General1
Geophysics1
Mechanics5
Mining44
Oil / petroleum164
Technology67

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