backed-off f milling cutter的意思|示意
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后退式铣刀
backed-off f milling cutter的网络常见释义
铲齿铣刀 ... backed d up type roller leveller 带支承棍的辊式矫直机 backed-off f milling cutter 铲齿铣刀 backer r pump 备用泵 ...