The test results indicate that this kind of programmable satellite signal source can satisfy most satellites'test requirements.

试验结果表明：本方案实现的可编程卫星信号模拟源能够满足多数卫星测试的需要。

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Arc voltage and welding current are signal source.

以电弧电压和焊接电流为采集的信号源。

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The device can be a signal source for the random signal process…

该装置还能为随机信号处理提供典型信号源。

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This unusually long potentiometer shaft allows the signal path between the audio source and the potentiometer to be kept very short, thus preventing possible interference of the signal.

ENGADGET: Sennheiser unveils HDVA 600 analog headphone amp, asks for $1,600

The high-end devices have a fully symmetrical layout for operation with analogue audio sources, thus ensuring absolutely symmetrical signal transmission from the source to the headphones.

ENGADGET: Sennheiser unveils HDVA 600 analog headphone amp, asks for $1,600

After the publication of the book, a drama scholar wrote to Mr. Unsworth asking for his source on the hand-signal system.

WSJ: A Tribute to Barry Unsworth | Dear Book Lover