名词
中文翻译：回旋式磨机
同义词：
['reciprocating mill', 'reciprocating saw']
例句：
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1.This reciprocating grinder is used to polish metal surfaces.
这台回旋式磨机用于金属表面的抛光。
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2.The engineer designed the reciprocating grinder to meet the production needs.
工程师设计了这台回旋式磨机以满足生产需求。
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3. The reciprocating grinder is an essential tool for metalworking operations.
回旋式磨机是金属加工操作中不可或缺的工具。