... copper stain ==> 铜斑 copper staining ==> 铜红扩散着色 copper stannopailadinite ==> 铜锡钯 ...
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Useable with all ferrous and nonferrous metals, including tin-coated steel, copper, brass, and other metals prone to staining.
它可以用在所有含铁金属和非铁金属上，包括镀锡钢，铜和其他有色金属。
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