Based on T type filter, the new ballast can achieve a wide dimming range with a very narrow frequency variation range, and it can operate with low lamp current crest factor.
基于T型滤波器的调光方法，能在很窄的工作频率范围内实现深度调光，同时具有灯电流波峰因数低的优点。
It shows that the stochastic dispersion variation connected with frequency affects the frequence and the position of the black soliton.
结果表明：只有与频率有关的随机色散变化对黑孤子的频率和位置产生影响。
So, in engineering computation it is acceptable to neglect the directional variation of coherence value with frequency.
因此在工程计算中不计相干函数随频率的变化不会带来太大的误差。
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