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单词 optoacoustic detection method
释义 optoacoustic detection method
[¦äp·tō·ǝ¦küs·tik di`tek·shǝn ´meth·ǝd]
ANALYTICAL CHEMISTRY
A method of detecting trace inpurities in a gas, in which the absorption of a sample of the gas at various light frequencies is measured by directing a periodically interrupted laser beam through the sample in a spectrophone and measuring the sound generated by the optoacoustic effect at the frequency of interruption of the beam.
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