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闸板防喷器
zhábǎn fángpēnqì
dril.
preventer
BOP
ram type
;
ram preventer
;
ram blowout preventer
;
ram-type preventer
闸板防喷器
:
36 phrases
in 4 subjects
Drilling
14
Mechanics
1
Oil / petroleum
15
Technology
6
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