让废品的制造者——家庭和企业无偿地对废品进行分类，是另一个降低废品回收成本的办法。
Another way to make recycling cheaper is to get the household or business that generates the waste to sort it free of charge.
本文根据相似原理，介绍了利用水力模拟的方法，研究活塞环的浇注过程，寻找降低废品的途径。
Based on the similarity principle, the casting process of piston rings has been investigated by hydraulic simulation in the paper, and the method of reducing rejected products has been searched.
系统的应用，降低了操作者劳动强度，显著降低了废品率和返修率，提高了焊接生产率。
The application of this system reduce handlers work intensity, and remarkably reduce reject ratio and returning rate, and enhance welding productivity.
应用推荐