英语翻译翻译内容如下：钻削中的钻削热来自切屑变形和机械摩擦,与车削比较,钻削属于半封闭式,在不使用切削液时,产生的热量大
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The drilling heat comes from chip deformation and mechanical friction,comparing with turning,drilling is in form of semi-enclosed.When stopped using the cutting fluid,most of the heat was absorbed and exported by workpiece and drill.When drilling,the front and back drill surface,edge,chisel edge have different abrasion,but if you use the corner ofmain drill outer edge of,you will get fastest abrasion,that is because it is the thinest part which with worst heat dissipation,however drill speed is the fastest and temprature is highest.
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