The pyrolysis and ignition of combustible materials are important processes taking place in an unwantedfire.
在突发的火灾过程中，可燃性固体材料的着火时间和热解特性是非常关键的参数。
2
Unwanted alarms , caused mainly by faulty automatic alarm systems or their poor positioning , contributed to about 56 . 9 per cent of the total number of fire calls.
警钟误鸣约占火警召唤总数的56 。 9 % ，主要是由于自动警报系统失灵或安装位置欠佳而引致。
3
Unwanted alarms, caused mainly by faulty automatic alarm systems or poor positioning of such systems, contributed to about 66 per cent of the total number of fire calls.