hand wheel shaft cap

例句：

1. 1.The mechanics of the hand wheel shaft cap are crucial for the proper functioning of the machine.
   手轮轴盖的机械原理对于机器的正确运作至关重要。
2. 2.The engineer replaced the old hand wheel shaft cap with a new one to improve efficiency.
   工程师用一个新的手轮轴盖替换了旧的，以提高效率。
3. 3. The safety features of the hand wheel shaft cap have been thoroughly tested before it was put into use.
   在投入使用之前，手轮轴盖的安全特性已经经过了彻底的测试。