Rhodium is a metal that is part of the platinum family.

铑是一种金属，是家庭的一部分，白金。

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A noteworthy factor in the photocatalysis process is the recovery of precious metals, including: platinum, gold, rhodium, silver and palladium.

在光催化过程中一个值得注意的因素是贵金属的回收，包括：铂，金，铑，银和钯。

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Recovers approximately 20 metals including: gold, silver, platinum, rhodium and palladium.

回收品种涉及20多种金属，包括：金、银、铂、铑、钯。

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Norilsk Nickel, which supplies the car industry with palladium, platinum and rhodium, is looking to expand its operations.

BBC: NEWS | Business | Metals boom sparks Kola nature fears

Rhodium, platinum and palladium are part of the platinum group metals (PGMs), primarily used to manufacture automobile emission control devices.

FORBES: Rhodium Inches Higher on News of Emerging Investment Products

As trends of strengthening global auto production and emissions regulations continue, Honda said, the company anticipates demand for platinum, palladium and rhodium to keep rising in the future.

FORBES: Honda's Reduced Use Of Rhodium Part Of Effort To Shift Away From More-Expensive Metals