该镀液长时间使用后能保持电流密度范围稳定。
The range of current density is still stable after the bath is used for a long time.
任何电镀都必须有一个能产生正常镀层的电流密度范围。
Any plating must have a can produce normal coating the current density range.
试验获得外观良好镀层的电流密度范围，并对镀层的可焊性作了评估。
Experiments were made on a range of current densities, in order to obtain a coating with fine appearance. The solderability of coating is evaluated.
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