例句與造句

1. In this, the centre wheel pinion, which the barrel gear engages, was attached to its shaft with a reverse screw thread.
2. The hand reversing screw spindle carried a disk, suitably notched with a locking device to ensure that the cam rollers would be in the centre of the selected cams under working conditions.
3. It's difficult to find reversing screw in a sentence. 用reversing screw造句挺難的