【机械工程】三辊式机座three-duct air conditioning plant three-high stand
三辊万能式轧机three-high universal rolling mill
三辊式粗轧机three-high roughing mill
三辊式机座three-high stand
三辊式轧机three-high rolling mill
三辊式型钢轧机three-high jobbing mill
三辊式轧机three-high mill【机】
三辊万能式轧机three-high universal mill