... backing-off angle ==> 后角 backing-off attachment ==> 铲齿附件,铲磨工附件 backing-off cone clutch ==> 反转离合器 ...
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... backing-off angle || 后角 backing-off attachment || 铲磨附件，铲齿附件 backing-off lathe || 铲齿车床，铲背车床 ...
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