英语词汇“photo echo”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	photo echo
释义	photo echo photo echo [′fōd·ō ‚ek·ō] (optics) A coherent pulse of light generated in a nonlinear medium at a characteristic time after two other pulses, separated by a certain time interval, have entered the medium.
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