名词
中文翻译：精磨机
同义词：
['machine for grinding', 'grinder例句：1. This demanuring machine is used to polish metal surfaces.（这台精磨机用于打磨金属表面。）']
例句：
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1. This demanuring machine is used to polish metal surfaces.
这台精磨机用于打磨金属表面。
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2.The engineers are responsible for maintaining the quality of the demanuring machine.
工程师们负责维护精磨机的质量。
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3. The demanuring machine has been upgraded to improve its efficiency.
精磨机已经升级，以提高其效率。