尽管铅不如铜、锌、镉和铭那样常见，但它却是电镀废水中的普通组分。
Lead is also a common constituent of plating wastes, although not so frequently encountered as copper, zinc, cadmium and chromiurn .
尽管铅不如铜、锌、镉和铭那样常见，但它却是电镀废水中的普通组分。
Lead is also a common constituent of plating wastes, although not so frequently encountered as copper, zinc, cadmium and chromiurn .
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