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。

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With bright nickel strike plating before pulse non-cyanide silver plating, brighter and finer silver coatings with stronger anti-tarnish property and corrosion resistance can be obtained.

光亮镍打底后再脉冲无氰镀银，可获得更加光亮、结晶细致的镀银层，且抗变色性能及耐蚀性均增强。

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The invention discloses an anti-tarnish paper finishing agent which is composed by mixing sodium benzoate, triethanolamine, urea, ethanol and water.

本发明公开了一种防锈纸处理剂，由苯甲酸钠、三乙醇胺、尿素、乙醇、水混合组成。

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Third , the zealot-film-maker narrative could be used to tarnish all those Bible-thumping, anti-abortion, and racist evangelicals, who vote overwhelmingly Republican.

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