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基礎(chǔ)科學(xué)

        spectrum A graph showing theeffect of different wavelengths of radiation,usually light,on a given process. It is oftensimilar to the ABSORPTION SPECTRUMof the substance that absorbs the radiationand can therefore be helpful in identifyingthat substance. F......（本文共 396 字）     [閱讀本文] >>