The head groups and phosphate are polar, that is they prefer to be in an aqueous environment.
头部和磷酸基是极性的，也就是说它们倾向于水性的环境。
Most drugs are weak organic acids or bases, existing in un-ionized and ionized forms in an aqueous environment.
多数药物是弱有机酸或弱有机碱药物，他们以非解离或解离型态存在于水性环境中。
Once injected into an aqueous environment, the polymeric mixture solidified into a solid implant due to the leaching of NMP.
一旦注入水相环境，此聚合混合物就会因NMP的浸出而固化成一种固体埋植体。
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