frequency variation range
frequency variation range
频率变化范围
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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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。
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