It is normal for white gold jewellery to lose brightness over time, but white gold wedding rings can be maintained with rhodium plating every few years or so.
白金珠宝随着时间的流逝失去光泽是很正常的事情，但是你可以通过每隔几年将其重新镀铑来使其保持光泽。
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。
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。
Lastly metal parts need to go through a plating or anodize process to prevent corrosion and oxidation over time.
最后的金属部件需要经过电镀或电镀过程中，以防止腐蚀和氧化时间。
Hull cell normally provides information about the performance of a plating process over a wide range of current densities in a single experiment and has a limitation in solution agitation.
赫尔槽实验可以在很宽的电流密度范围内提供电沉积过程的信息，但受到溶液搅拌的限制。
MOVABLE BLADE: Stainless Steel, Ag over Ni plating.
动刀：不锈钢，对镍银电镀。
We have over 10 machines for steel ball manufacturing and filtering. And, one plating line is ready and it can plate nickel and tin.
本公司有生产和分选导电钢珠珠的专业设备十几台，并且建有一条专门的电镀生产线，为本公司的产品电镀锡和镍。
"Most" copper "COINS are actually bronze, typically with about 4% tin and 1% zinc, or copper plating over base metal."
很多“铜币”实际上是用青铜铸造的，其典型成分是约4%的锡和1%的锌。
"Most" copper "COINS are actually bronze, typically with about 4% tin and 1% zinc, or copper plating over base metal."
很多“铜币”实际上是用青铜铸造的，其典型成分是约4%的锡和1%的锌。
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