铅镉蓄电池 lead-cadmium battery 银镉蓄电池 silver cadmium battery; silver cadmium storage battery; silver-cadmium battery ..
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And most of the battery will not charge, but also contains heavy metals mercury, lead, nickel, cadmium.
并且大多电池不但不能充电，而且含有汞、铅、镍、镉等重金属。
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