历史提供了影响深远程度的复杂信号。
History sends mixed signals about how much these effects matter.
应用所设计的数字滤波器对由多个简谐波合成的复杂信号进行了滤波分析。
A complex signal comprising several simple harmonic components is analyzed to check the performance of this Digital Filter software.
有证据显示一些设在阿富汗的外国使馆和领事馆都具有拦截复杂信号的能力，包括防护水平低的移动电话。
There is evidence some foreign embassies and consulates located in Afghanistan are capable of sophisticated signals interception to include the least protected mobile phones.
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