单词	absorption spectrum
释义	absorption spectrum noun : an electromagnetic spectrum in which a decrease in intensity of radiation at specific wavelengths or ranges of wavelengths characteristic of an absorbing substance is manifested especially as a pattern of dark lines or bands Word History First Known Use 1833, in the meaning defined above Medical Definition absorption spectrum noun : an electromagnetic spectrum in which a decrease in intensity of radiation at specific wavelengths or ranges of wavelengths characteristic of an absorbing substance (as chlorophyll) is manifested especially as a pattern of dark lines or bands compare emission spectrum
随便看	beyond the means of beyond the pale beyond the reach of beyond understanding beyond/outside the bounds of possibility beyond/past redemption beyonder beyondest beyondness beyonds beyonst drop the bomb drop the handkerchief drop the subject drop to one's knees drop volley drop weight drop window drop wire drop zone drop-bottom bucket drop-dead drop-dead date drop-down drop-down list

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