名词
中文翻译：内部研磨头
同义词：
['internal grinding element', 'internal grinding head assembly']
例句：
-
1. The machine has a built-in grinding head that can be used to polish the surface of the workpiece.
这台机器有一个内置的研磨头，可以用来抛光工件的表面。
-
2. The engineer replaced the worn-out internal grinding head with a new one.
工程师用一个新的内部研磨头替换了磨损的部件。
-
3. The technician carefully removed the old internal grinding head and installed a new one in its place.
技术员小心地取下了旧的内部研磨头，并将其安装在新的位置上。