Therefore, study on classification and evaluation of soil function is necessary.
因此，对土壤功能的分类与评价进行研究显得尤为必要。
History and status of the study on the classification of tea plant.
文章题目茶树分类研究的历史和现状。
The second part is a classification and a comparative study on foreign tax credit.
第二，外国税收抵免的分类与比较。
Study on the Construction and Classification of Gas Explosion Accident Prevention System in Coal Mine;
还在讨论此次瓦斯爆炸的以外事故。
Study on the Construction and Classification of Gas Explosion Accident Prevention System in Coal Mine;
还在讨论此次瓦斯爆炸的以外事故。
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