表面应无磨损产生的物质，并应符合检验规范xxx - xx的要求。
The surface shall be free from wear producing material and shall meet the requirements of test specification XXX-XX.
通过对数控程序的碰撞和干涉检验，能够提高工件的加工表面质量，减少刀具的磨损。
It can improve the machining surface quality of the workpiece and reduce wear of the tool through checking collision and interference of nc programme.
此外，利用趋势检验的方法，检验每台机组的磨损趋势。
In addition, Using the tendency test method, we forecast the equipment the wear tendency of every unit.
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