jackshaft propeller shaft

例句：

1. 1.The engineer used a jackshaft to lift the car off the ground.
   工程师用一个杰克枪炮筒把汽车从地上抬起。
2. 2. The propeller shaft was damaged during the flight, causing the plane to lose altitude.
   螺旋桨轴在飞行中受损，导致飞机失速。
3. 3.The engineer carefully dismantled the propeller shaft before reassembling it.
   工程师在重新组装前小心地拆解了螺旋桨轴。