semi-automatic bearing grinder

例句：

1. 1. This semi-automatic bearing grinder is very efficient in removing small metal particles from the surface of theworkpiece.
   这款半自动轴承磨床在从工件表面去除微小金属颗粒方面非常高效。
2. 2. The engineer used this machine to grind the bearings for his new car.
   这位工程师使用这台机器来为他的新车磨削轴承。
3. 3. The grinding process requires a lot of skill and precision, which is why only professionals are allowed to operate this semi-automatic bearing grinder.
   磨削过程需要很多技巧和精确度，这就是为什么只有专业人士才能操作这种半自动轴承磨床。