...(3+2) = 3N-5理论上： 每个振动自 由度（ 基本振动数） 在红外光谱区均产生一个吸收峰带第二章 红外光谱（Infrared spectra IR） 8(1)伸缩振动(stretching vibration)， 以ν表示①对称伸缩振动以νs表示。 ②不对称伸缩振以νas表示。
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infrared absorption spectra ir 红外吸收谱
fourier transform infrared spectra ft-ir 傅里叶变换红外光谱
fourier transform infrared ft-ir spectra 傅里叶转换红外光谱
The characterization of SiN thin films was studied by spectral ellipsometry, reflection spectra, infrared absorption spectroscopy (IR) and quasi-steady state photoconductance (QSSPC) measurements.
利用椭圆偏振光谱、反射谱、红外吸收谱和准稳态光电导（QSSPC）分析了氮化硅薄膜的特性。
In this paper, the feature of infrared spectra and thermostability of sandwich like molybdophosphates have been studied by IR and TGA-DSC method.
本文利用红外光谱法、热重法及示差扫描量热法研究了夹心型钼磷酸盐的红外光谱特征和热稳定性。
Library search for UV spectra is more difficult than that for infrared (IR) spectra, because the UV spectra overlap more severely than IR spectra.
紫外光谱的库检索比红外光谱检索更困难，因为紫外光谱的重叠更为严重。
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