The purity of refined naphthalene could be more than 99.5% by said fractional crystallization process.
通过分级结晶提纯过程，可获得纯度达到99.5%以上的精萘产品。
The principle and characteristic of continuous multistage fractional crystallization process are introduced.
介绍了连续多级逆流分步结晶过程的原理和特点。
When the model is applied to study the behaviors of trace elements and stable isotopes in the assimilated fractional crystallization process, the results are consistent with the previous AFC model.
运用本文多源多汇模型研究岩浆同化-分异结晶过程中微量元素和稳定同位素的行为，所得的结果与前人AFC模型结果一致。
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