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发表于 2015-2-10 11:16:52
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If the same signal were tested with a shorter ruler, say, 0.25 unit intervals long, then the ruler would certainly be crossed less frequently. Perhaps only one waveform out of every 100,000
waveforms, on average, would cross this shorter ruler. One could say that, aside from one waveform in 10 , the eye was 25% open.
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