磨刃 meaning in Chinese

sharpening

In order to improve the performance of a up - cut rotary blade , the sidelong portion angle of the blade was analyzed based on soil - blade geometry
摘要为提高反转旋耕刀的性能，根据旋耕刀运动的特点，从旋耕刀几何学及切削角度方面出发，对反转旋耕刀正切面角度及对磨刃面的影响进行了分析。
But even without that , a man learneth of himself , and bringeth his own thoughts to light , and whetteth his wits as againsta stone , which itself cuts not
即令没有这样的最好朋友，一个人也能借言谈的力量自己增长知识，把自己的思想使之明白表现，并且把自己的机智磨厉得更为锋利，如磨刃于石，刃锐而石固不能割也。