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 factors of flammability testing of no-halogen flame-retardant PE were investigated by testing methods of the oxygen index and the smoke density.
当煤矿井下发生爆炸时会产生一定体积、温度、浓度及密度的毒害烟流。
Poisonous and harmful smoke flow with a certain volume, temperature, concentration and density will be generated during explosion in a coal mine.
不同烟温度下收集的木醋液密度、气味、颜色差别不大。
The differences of density, odor and color for wood vinegar collected at different smoke temperature were very little.
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