belt stretching machine

例句：

1. 1. Thisbelt stretching machine is very useful for repairing worn-out belts.
   这台皮带拉伸机对于修理磨损的皮带非常有用。
2. 2. The technician used the belt stretching machineto replace the old belt on the conveyor.
   技术员使用皮带拉伸机来更换输送带上的旧皮带。
3. 3. The belt stretchingmachine was designed to make the process ofbelt replacement more efficient and accurate.
   皮带拉伸机的设计目的是为了使皮带更换过程更加高效和准确。