求翻译：本论文以磷石膏为原料，硫酸为浸取剂，有效地去除了磷石膏中的杂质磷、氟，同时对磷石膏酸法除P、F的过程进行了动力学研究，以确定动力学模型和控制步骤，并在研究分析纯二水硫酸钙及磷石膏在硫酸溶液中溶解度的基础上，以此溶解度为依据进行常压制晶须的探索性实验研究。是什么意思？

This thesis is phosphogypsum as raw material, sulfuric acid as the leaching agent, to the addition to the impurities in phosphogypsum phosphorus, fluorine, in addition to p, f the process of phosphogypsum acid kinetic study to determine the kinetic model and control procedures, and analytical grade

In this paper, and Phosphor gypsum as a raw material for sulfuric acid leaching from the agent that effectively removes impurities from the phosphor gypsum in phosphorous, fluorine, and the phosphor gypsum acid Law, F P except with the process dynamics studies to determine dynamics model and control

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The present paper take the phosphorus gypsum as raw material, the sulfuric acid for soaks takes the medicinal preparation, has effectively removed in the phosphorus gypsum impurity phosphorus, the fluorine, simultaneously to the phosphorus gypsum acid process except P, the F process has conducted dy