爆炸时的临界氧浓度，则需用另一种三角形图示法予以确定。
Critical oxygen concentration for explosion is decided by a new triangle illustration method.
通过实验，对煤矿井下存在的多元混合气体的爆炸极限和临界氧浓度进行了分析和研究。
The paper experimentally studied the explosive limit and the critical oxygen concentration of several kinds of gases that are found in the mine.
可燃性气体（蒸气）的临界氧浓度目前只限于对单元气体混合物的研究，且影响因素较少提及。
The research on the critical value of oxygen content in combustible gases is limited to the single gas mixture and the influence factors are less mentioned.
可燃性气体（蒸气）的临界氧浓度目前只限于对单元气体混合物的研究，且影响因素较少提及。
The research on the critical value of oxygen content in combustible gases is limited to the single gas mixture and the influence factors are less mentioned.
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