... 信风区沙漠：trade-wind desert 信道的频率划分：frequency division of channel 信贷上限：credit ceiling ...
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求出多相滤波器频率响应后，用多个基于相同原型滤波器的数字滤波器将其划分为多个信道输出以达到降低信道输出速率的目的。
After polyphase filter frequency response was done, the channel out rate was fallen, and it was divided into multi-channel by the several digital filters based on the same archetype filter.
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