The edge position, visible area and the mean of gray value of flame also be discussed by analyzing the flame images.
分析火焰数字图像，讨论了火焰锋面位置、火焰面积、平均灰度的计算方法。
Objects seem limned by an unseen flame, and exotic fragrances hover at the edge of awareness.
像是被看不见的火焰描绘，并有奇特的香气徘徊在可察觉的边缘。
Then the influence on flame structure of supersonic combustion of ratio of length and deep of cavity, obliquity of back edge of cavity and different schemes of fuel injection were studied.
用这种方法研究了不同凹腔长深比、凹腔后缘倾角和不同燃料喷注方案对超声速燃烧火焰结构的影响。
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