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一把刀具,使用一阶段后,可以看到它的刀刃开始变钝,而无法应用。但是,经过重新刃磨以后,仍然可使刀刃恢复锋锐,继续使用。就这样,经过使用——磨钝——刃磨锋锐,几个循环以后,刀具便无法恢复锋锐而完全报废了。这道理也很简单,因为每把刀经过一次刃磨,它的刀头都要磨掉一部分,经过几次刃磨后,刀头就完全给磨掉了,自然也就无法再用了。刀具从开始到完全报废这个使用期限,我们可以把它称为“寿命”。而从锋锐到磨钝这一过程,我们把它叫做“耐用度”。每个同志都希望自己使用的刀具耐用
A knife, using a stage, you can see it’s blade began to dull, but can not be applied. However, after re-sharpening, you can still make the blade restore Fengrui, continue to use. In this way, after use - blunt - sharpening Feng Rui, after a few cycles, the tool will not be able to restore Fengrui and completely scrapped. This is also very simple, because each knife after a sharpening, it must wear off part of the blade, after several sharpening, the blade is completely worn away, of course, can no longer be used. Tool from the beginning to the full retirement of this period, we can call it “life”. From Fengrui to blunt this process, we call it “durability ”. Every comrade wants the tools he uses to be durable