模型；水盐体系；溶解度计算。

Pitier model, salt-water system, prediction of solubility.

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本文介绍了甲烷-水体系的甲烷饱和溶解度、水合物体系中甲烷水合物溶解度计算方法。

The calculation methods of methane saturation solubility in water-methane equilibrium system and methane hydrate solubility in hydrate system are introduced in this article.

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对溶解度参数的计算结果表明，与文献值的一致性令人满意。

The results of calculation for the solubility parameters are consistent with the literature values.

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