... proper fractional function 真分数函数 proper frequency 固有频率 proper function 特寨数 ...
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When a plate is simply supported at four edges, it can be solved by double sine sery method to get each proper frequency.
当板的四边为简支时可用双正弦级数解法来求得各阶固有频率。
Wavelet packets with the advantage of time frequency zoom is used in this paper to decompose the post fault transient electrical quantities by the proper frequency span.
应用在时频空间皆具有良好聚焦特性的小波包，以适当频率带宽，对故障后暂态电气量进行分解。
Extensive simulations show that combining three diversity branches with proper frequency shifts reduces BER by an order when the normalized Doppler spread is larger than 0.3.
大量的仿真结果表明，三个分集结合适当的频率变化，降低了误码率的命令时，归一化多普勒扩展是大于0.3。
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