The first soft metal layer and the second soft metal layer are made of tin alloy or lead alloy.
第一软金属层和 第二软金属层采用锡合金或铅合金材料。
The first soft metal layer and the second soft metal layer are correspondingly plated on the contacts of the positive pole and the negative pole of the dry battery.
第一软金属层和第二软金属层 是对应镀在干电池的正电极的触点上及负电极的触点上。
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