... 砂轮，磨轮 abrasive wheel 双磨轮 double abrasive wheel 细磨轮 fine grinding wheel ...
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短语
双砂轮磨床
double disc grinding machine
双托轮磨机
two-tired mill
握持双轮磨刀器
holds a two-wheel sharpener
双向滚轮磨刀器
two-way roller sharpener
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