sewing machines and parts
sewing machines and parts
缝纫机及零件
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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This article elaborates the structure, property and processing mechanism of planet polishing machines, the author has made the tests of polishing sewing machine parts.
简述行星抛光机的结构、性能特点及其加工机理，进行了缝纫机零件行星抛光工艺试验。
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