The method for generating the second signal is put forward based on the period rule of the phase difference for two frequency signals with the frequency difference. 摘要利用兩個有一定頻差的頻率信號相位差變化的周期性規律提出了一種秒信號產生方法。
The reason inductors are used in crossover design is because the impedance of an inductor increases as the frequency of the signal applied to it goes up. 原因電感器中使用的交叉設計是因為阻抗電感增加的頻率信號，適用於這是不言而喻了。
