在实验中，大套管实验工况的火焰稳定性比小套管要好。

In this experiment, the flame stability under large bushing is better than under small bushing.

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回转窑火焰图像的正确分割对于提取回转窑工况参数具有重要的意义。

Accurate segmentation of flame image in rotary kiln is very important for the extraction of working parameters.

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试验数据表明，在某些特殊工况下，二次风脉动幅度可能高达40%，对火焰稳定性影响较大。

Test Data show that the pulsating amplitude of secondary air can reach 40% under some special conditions, affecting more greatly the flame stability.

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