The image processing method was introduced into the experiments. Flame height was acquired by the video frequency taken by the camera to give the parameters of lateral critical water flow rate.
将数字图像处理方法运用到实验中，通过读取摄像机拍摄的杉木板垂直火蔓延的视频，实时获取火焰高度，为后续计算临界水施加率提供参数。
In the study of flow oscillation and discrete frequency noise of impinging jet, it is found that there is a critical pressure ratio for a given nozzle and a nozzle-to-plate distance.
为探索冲击射流离散频率噪声的产生机理，系统地研究了冲击射流离散频率噪声的特性。
In the study of flow oscillation and discrete frequency noise of impinging jet, it is found that there is a critical pressure ratio for a given nozzle and a nozzle-to-plate distance.
为探索冲击射流离散频率噪声的产生机理，系统地研究了冲击射流离散频率噪声的特性。
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