词汇	coal door
释义	coal door 🌏装煤舷门
随便看	rolling mill drive rolling mill drive apparatus rolling mill engine rolling mill equipment rolling mill for annular shapes rolling mill for circular shapes rolling mill for rubber rolling mill for seamless tubes rolling mill gage rolling mill gauge rolling mill gear and axletree Rolling mill guide rolling mill guides rolling mill housing rolling-mill housing rollingmilling rolling milling rolling mill machine rolling mill machine drive rolling mill machine drive, electric rolling mill machinery Rolling mill main drive system rolling millmotor rolling mill motor rolling mills