shaft body

例句：

1. 1. The machine's shaft body is made of high-quality steel.
   这台机器的轴体是用高质量的钢材制成的。
2. 2.The shaft body of the drill is designed to be durable and strong.
   钻机的轴体设计得既耐用又坚固。
3. 3.The shaft body of the car is made from aluminum alloy.
   汽车的轴体是由铝合金制成的。