合金

缩写：hj

拼音：hé jīn

解释：由一种金属元素跟其他金属或非金属元素熔合而成的、具有金属特性的物质。一般合金的熔点比组成它的各金属低，而硬度比组成它的各金属高。

更新时间：2024-10-06 06:22

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