Moisture welts: Wrinkles in a paper roll caused by moisture absorption after drying.

水痕：纸卷在干燥后吸收水份而起皱的情况。

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Polymer and coupling agent were used to coat phase stabilized ammonium nitrate (PSAN) by mens of spraying and drying technology in order to lower moisture absorption of an.

为降低硝酸铵(AN)的吸湿性，采用喷雾干燥技术，用聚合物和偶联剂对相稳定硝酸铵(PSAN)进行改性。

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By the application of physical absorption purification and spray drying technology, the producing cost is low while the quality of the products and the producing rate are high.

采用物理吸附纯化，喷雾干燥技术，生产成本低，产品品质好，得率高。

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