Silver Tarnishing and its Preventing Technique
银器的变色和防护技术
Bright tin electrodeposits on copper wire are susceptible to tarnishing.
铜线材经光亮镀锡后易产生腐蚀变色。
An Analysis of the Causes for Tarnishing of Tin Coating on Brass Substrate
黄铜基体镀锡变色原因的分析
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