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根据铁的熔化热数据，校正了铁碳二元相图富铁端的固相线，并根据校正后的固相线，求出Ｈ点的碳含量为０．０６４％，结晶时碳在固、液相中的分配比为０．１２。
According to the data of melting heat of iron, the solidus of the iron-carbon binary phase diagram at the iron-rich end was corrected and the carbon content at H point was 0.064% based on the corrected solidus. The distribution ratio in the liquid phase is 0.12.