在渗碳过程中，稀土元素对介质的分解，吸收和碳原子的扩散都起到了促进作用。
In the carburizing process, rare earth elements could promote the decomposition and absorption of medium and the diffusion of carbon atom.
在渗碳过程中，稀土元素对介质的分解，吸收和碳原子的扩散都起到了促进作用。
In the carburizing process, rare earth elements could promote the decomposition and absorption of medium and the diffusion of carbon atom.
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