单词	backing line
释义	backing line 前级管路
随便看	pressure roller solenoid pressure rolls pressure rubber tubing pressures pressure safeguard pressure safety limit pressure safety relief valves pressure safety switch pressure safety valve pressure sand filter pressure saponification pressure sb into doing sth pressure scale pressure scale height pressure scaling pressure-scanned laser pressure schedule pressure schistosity pressure sclution pressure screen pressure screw pressure screw check nut pressure screw extractor pressure screw feeder pressure seal 百世流芳百业萧条百中百发百举百全百举百捷百了千当百事大吉百事无成百二关河百二山川抢道抢钱抢镜抢镜头抢险抢风抢风护护丧护书