有关供水体系的问题很多人都弄不明白。
Many people don't understand the problems related to the water system.
H 2 O是空气-水体系的模型体系。
季节性冻土是一种冰水共存的特殊土水体系。
Seasonal frozen soil is a special soil water system where ice and water coexist.
乙醇-水体系收率可达75%，异丙醇-水体系收率可达80%。
The yield for ethanol-water system was 75%, and that for isopropanol-water system could reach 80%.
酚类化合物在该封闭模拟海水体系中的生化耗氧过程符合一级动力学方程。
The biochemical oxygen demand process satisfied the first-order kinetic equation in this close system.
酚类化合物在该封闭模拟海水体系中的生化耗氧过程符合一级动力学方程。
The biochemical oxygen demand process satisfied the first-order kinetic equation in this close system.
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