【单选题】_____ are mounted on and bolted to the bed-plate cross girders.
【单选题】V带传动是依靠带与带轮之间的( )来传递运动和动力的。
【单选题】The bed-plate is secured in the longitudinal direction by means of bolts known as _____.
【判断题】带传动是依靠带和带轮接触面间的摩擦力来传递动力和运动的,因此同步齿形带传动也是靠带齿与轮齿之间的啮合摩擦力传动运动和动力的。
【单选题】A-frames are mounted on the bed plate and support _____ and cylinder block.