Contact plating: Gold plating over Nickel on contact area tin plating on solder tail.
触点电镀：镀镍金的接触面积的锡焊尾电镀。
Contact material and plating are the primary factors that determine this specification.
触点材料和镀层是决定该指标的主要因素。
In addition to bias, the manufacturing technique and plating of the barrel itself influences R2 over the lifetime of the contact.
除了偏置以外，壳体本身的制造技术和镀层也会在弹针的整个使用寿命期限内影响R2。
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