由于LL子带占据变换系数的大部分能量，提出一种基于邻域系数的梯度的预测编码单独编码LL子带。
Predictive coding based on the grads of neighbor coefficient is proposed to encode LL subband because LL subband occupied a majority of energy of transform coefficient.
研究了主变换器的单独运行及其输出电压的控制。
The separate operation of the main converter and the output voltage control are studied.
研究了主变换器的单独运行及其输出电压的控制。
The separate operation of the main converter and the output voltage control are studied.
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