Gold-plated: improve conductive contact impedance improve signal transmission.
镀金：改善导电接触阻抗，增进信号传输。
2
The contamination on contact surfaces was found to be one of the main reasons to cause electric contact failure by analyzing lots of goldplated contacts in failed mobile phones.
研究了大量失效手机中的镀金触点后发现，触点表面污染是造成电接触故障的主要原因之一。
3
Contact resistance of carbon-plated material is much higher than that of goldplated materials. Low contact force will result in unstable resistance of C-plated material.