cyanide-free gold plating
cyanide-free gold plating
无氰镀金
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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The effect of pulse frequency and pulse duration ratio on the abrasion resistance of gold coatings is investigated with pulse plating in cyanide free and trace cyanide baths.
研究了脉冲电镀在微氰镀金，无氰镀金体系中脉冲频率、脉冲占空比对镀金层耐磨性的影响。
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