该旋转体由圆柱形滚筒形成。
A two-dimensional optical scanning apparatus has a rotating body or a moving body that rotates endlessly.一种二维光扫描装置,其具有旋转体或循环旋转的运动体。
Balancing machine is a machine for measuring the size and position of the unbalance of a rotating body (rotor).平衡机是测量旋转物体(转子)不平衡量大小和位置的机器。