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单词 platinum-rhodium alloy
释义 platinum-rhodium alloy
[`plat·ǝn·ǝm `rō·dē·ǝm `al´ȯi]
METALLURGY
An alloy with up to 40% rhodium; as concentration of rhodium increases, so do chemical resistance and hardness (although less hard than for platinum-iridium alloys); used as a catalyst to make nitric acid, in thermocouples, and in rayon spinnerets.
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