The factors of flammability testing of no-halogen flame-retardant PE were investigated by testing methods of the oxygen index and the smoke density.
采用氧指数和烟密度分析方法，对无卤阻燃聚乙烯试样燃烧性能测试的影响因素进行了分析。
The density function and working radium are added to the particle properties, thus very little particles are needed to generate the smoke density field.
为粒子属性引入浓度函数和作用半径，从而只需少量粒子就可快速获得浓度场分布。
The sample extraction smoke detection system draws air samples from all cargo space the fed to the smoke detection panel if the smoke density exceed the bounds the system send out fire alarm.
抽气探烟报警系统是利用风机单元将现场的空气抽到核心判断单元进行分析，如果所抽空气的烟雾浓度超过规定的门限值，系统给出火警提示。
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