In one case, executives discovered a coating advertised as pure gold that masked a complex alloy, which included rare metals such as osmium, iridium, ruthenium and rhodium.

在一个案例中，业内高管发现一种号称纯金的涂层其实是一种复杂的合金，含有锇、铱、钌、铑等稀有金属。

youdao

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。

youdao

For now, white gold wedding rings are usually enhanced with rhodium plating, creating a luxurious shine and reflective surface.

目前，白金婚戒往往是通过镀铑来达到亮丽的光泽和反射效果。

youdao

The mine life is projected at more than 20 years and the metal split is 64% platinum, 27% palladium, 5% rhodium and 4% gold, he said.

FORBES: Platinum Group Metals Targets 2013 For South African Mine Start