词汇	钻井井管
释义	钻井井管 drilling pipe
随便看	safety manufacture safety manufacture supervising safety margin safety margin of pipeline shut down safety margin of profitability safety margin of shutdown safety margins safety mark safety mark color safety marked coat safety marking safety mark, safety symbol, safety indicator safety mask safety mat safety match safety matches Safety matches safety material Safety Mat Fault safety matrix safety mat switch safety means safety means against ROPE safety means against ROPESbreakage on cranes safety means along the route