buhrstone mill磨盘式磨粉机;[机] 硅石磨盘;石磨机英语
buhrstone e磨石
underdriven buhrstone mill底动石膏
buhrstone e mill磨盘式磨粉机
over-driven buhrstone mill上动细纱质石磨
N（名词） a hard tough rock containing silica, fossils, and cavities, formerly used as a grindstone 硅质磨石