This standard covers the polymeric content and physical characteristics of PP (polypropylene) plastic materials for injection molding and extrusion.

这个标准涵盖用于注模和挤压成形的PP(聚丙烯)塑料材料的聚合体含量和物理性能。

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The conditions for synthesis of PP (polypropylene) -diphenylcarbazide resin and separation and preconcentration of silver in geological samples have been studied.

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。

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The conditions for synthesis of PP (polypropylene) -diphenylcarbazide resin and separation and preconcentration of silver in geological samples have been studied.

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。

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