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单词 ondograph
释义 ondograph
[`än·dǝ´graf]
ELECTRONICS
An instrument that draws the waveform of an alternating-current voltage step by step; a capacitor is charged momentarily to the amplitude of a point on the voltage wave, then discharged into a recording galvanometer, with the action being repeated a little further along on the waveform at intervals of about 0.01 second.
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