This precipitate dissolves in an excess of aqueous ammonia.

这个沉淀能溶解在过量的氨水中。

Aqueous ammonia must be hydrolyzed in order to be used, but it is substantially safer to store and transport than anhydrous ammonia.

氨水必须水解才能使用，但它实质上安全储存和运输比无水氨。

The preparation of ethanolamine is mainly composed of aqueous ammonia and liquid ammonia methods, which belong to typical homogeneous catalysis and heterogeneous catalysis respectively.

乙醇胺主要由氨水法与液氨法两种制备方法合成，它们分属于典型的均相催化与多相催化。

Ammonium polymethacrylate (APMA) was prepared from methacrylic acid and aqueous ammonia , then the water-soluble copolymer of APMA-PMMA were synthesized.

以甲基丙烯酸为主要单体，通过加氨水改性和与甲基丙烯酸甲酯共聚，合成了一种水性易热降解高分子材料。