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-现代词典

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.
随便看	a bread and butter letter a bread-and-butter letter a bread basket a bread-basket a breadbasket a break down a breakdown a break in a break-in a breaking point a break-out a breakout a break-through a breakthrough a break-up a breakup abreast abreast in a boat abreastly abreast milling abreast of a breathing space a breath of fresh air a breed apart abrees

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