以聚氧化丙烯二醇和甲苯二异氰酸酯、一缩二乙二醇等为主要基体材原料，以联二脲（LDA）、聚磷酸铵（APP）作为阻燃剂，制作了聚醚聚氨酯弹性体。
Polyether polyurethane elastomer material was prepared based on polypropylene oxide glycol, toluene diisocyanate (TDI) and DEG as main base meterial, LDA and APP as flame retardants.
为确保动物多肽产品的临床疗效，对纯化后的骨宁动物多肽用聚丙烯酰胺凝胶电泳进行了分析．并用双缩脲法测定了多肽的含量。
In order to ensure the efficacy of animal polypeptide on clinic, the purified animal polypeptide was analyzed by polyacrylamide gel electrophoresis, and its content was determined by biuret test.
研究了PP(聚丙烯)二苯氨基脲树脂的合成及其分离富集样品中银的条件。
The conditions for synthesis of PP (polypropylene) -diphenylcarbazide resin and separation and preconcentration of silver in geological samples have been studied.
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