A new anti-tarnish agent has been screened out, based on phytic acid, sodium benzoate, sodium molybdate and EDTA by means of orthogonal analysis and conditional experiments.
采用正交试验和条件试验，筛选出了一种以植酸、 苯甲酸钠、 钼酸钠和EDTA为基本组成的镍磷合金抗蚀防变色剂。
The foaming agents for new porous material production for wastewater treatment were screened by comparative and cross-field experiments.
本文用对比试验和正交试验的方法，对废水处理新型填料的发泡剂进行了筛选。
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