But it has low melting point and sintering point, when it is used to extinguish a fire, it can rapidly decompose to form a layer of film, which can cover the surface of comburent and make the fire.

但低聚磷酸铵具有较低的熔点和烧结点，用来灭火时能迅速分解形成膜层覆盖于燃烧物表面使火焰熄灭。

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But it has low melting point and sintering point, when it is used to extinguish a fire, it can rapidly decompose to form a layer of film, which can cover the surface of comburent and make the fire.

但低聚磷酸铵具有较低的熔点和烧结点，用来灭火时能迅速分解形成膜层覆盖于燃烧物表面使火焰熄灭。

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