英语词汇“four-level laser”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	four-level laser
释义	four-level laser four-level laser [¦fȯr ¦lev·əl ′lā·zər] (physics) A laser in which the lowest level for a laser transition is an excited state rather than the ground level.
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