The additive process requires less raw material and, because software drives 3d printers, each item can be made differently without costly retooling.
加法制造的过程中需要的原材料更少，因为3d印制机制由软件驱动，它可以制作所需的不同部件，而不用对每个不同部件进行耗材耗时的更换机械设备。
In this paper, studies are made on the impurities control method during leach by adding the additive.
本文研究了在浸出过程中加入添加剂抑制杂质浸出的方法。
A general review is made over mineral feed additive industry at home and abroad.
介绍矿物质饲料添加剂的国外及国内行业情况。
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