Platinum doping is need before nickel chemical plating for FR rectifiers.
快恢复二极管需要在化学镀镍前扩铂。
Platinum plating gives the silver setting a rich finish and also makes it tarnish-proof and hypoallergenic.
白金电镀银设置赋予了丰富的完成，也使得它玷污，证明和低过敏。
Platinum plating gives the silver setting a rich sheen and also makes it tarnish-proof and hypoallergenic.
白金电镀银设置赋予了丰富的光泽，也使得它玷污，证明和低过敏。
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