溶液中的盐份富集在聚合物分子的带电基团附近，并形成盐浓度梯度分布。
Salts are enriched around electriferous groups of polymer molecules in solution, which formed a salt concentration gradient.
陆源废水排放位置是影响磷酸盐浓度空间分布的主要因素。
The inshore positions of the wastewater discharge are the major factors influencing the spatial distribution of phosphate concentrations.
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