两个最陡峭的喷嘴曲率，在50到100秒的时间内， 是可以很容易被识别的。
The two sharpest nozzle curvatures are easily recognizable in the 50-100 second time frame.
数值计算表明，气体速度随入口段曲率半径的增大而增大，拉伐尔喷嘴和长度则随曲率半径的增大而减小。
The numerical calculation results show that the gas velocities increase with the reduction of curvature and the length of laval nozzle decreases with the increase of the radius of curvature.
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