那么分子的振动，到了红外光谱的波段，它们通常大约有1,000个波数。
So molecular vibrations, you know, you've taken IR spectra they're typically on the order of 1,000 wave Numbers or so.
用傅里叶红外光谱仪，在选定的波数范围内，采用化学计量学法测量乙烯裂解汽油的二烯值。
Combined with stoichiometric method, the diene value in cracking gasoline was determined by Fourier Transform Infrared Spectroscopy at selected wavenumber region.
样品剥落后，应力的消除使红外吸收峰位向低波数移动。
When the films were peeled off the substrate, stress relaxes and the IR absorption peaks shifted to lower wave numbers.
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