vitiated

The backdraft phenomenon is a fire phenomenon in vitiated buildings where the hot gas rapidly combusts due to abruptly supplying abundant fresh air after combustion with lack of oxygen or even smoldering. This transient phenomenon is an example of typical nonlinear behavior.

回燃是在通风受限的建筑火灾进入缺氧燃烧甚至闷烧后，由于新鲜空气的突然大量补充引起热烟气急剧燃烧的现象，这种转捩现象是典型的非线性行为。

Analyzing about the statistical characteristic data of soil nitrate content, the result was that the range of coefficient of variation of soil nitrate content is between 46.71% and 99.78%, in which belong to the medium-degree vitiated intensity.

对土壤硝态氮的统计特征数据分析知，土壤硝态氮的变异系数在46.71-99.78%之间，属中等变异。

A lifted turbulent H_2/ N_2 jet flame in a hot and vitiated coflow is investigated numerically to explore the issues of auto-ignition as well as the flame lift-off.

采用数值方法研究了一个高温燃烧产物环境中的抬举湍流H2/N2射流火焰，对火焰的自然和抬举特性进行了研究。