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blowout preventer
oil 防喷器
tech. 封井器; 防喷装置; 石油防喷器
blowout preventers
earth.sc. 防喷器
surface blowout preventer
mech. 地面防喷器
blowout preventer: 72 phrases in 5 subjects
Drilling24
Mechanics3
Mining2
Oil / petroleum36
Technology7