Two control ring work together to realize variable speed constant frequency.
运行时机组的两个控制环同时工作，实现变速恒频。
Variable speed constant frequency generating system has been used in modern aircraft.
变速恒频电源系统已在现代飞机上使用。
This results on a typical logarithmic frequency scale in a constant speed.
这样的结果对一个典型的对数频率范围在不断加快。
As the speed is constant, when the frequency is increased, the wave length will.
因为速度不变，当频率增加时，波长就会减少。
As the speed is constant, when the frequency is increased, the wave length will.
因为速度不变，当频率增加时，波长就会减少。
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