Crystal can be crystallographically oriented by molecular spectrum with the change in band shift, bandintensity, and band shape.
利用分子光谱谱带位移、谱带强度、谱带形态等的变化，可以初步对晶体作结晶学定向。
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This is no small thing; the standard for Wi-Fi was developed on unlicensed spectrum that had been considered "junk band", cluttered with low-intensity signals from microwave ovens and baby monitors.
Pressure data were analyzed by wavelet transform in wavelet domain. Frequency band energy spectrum and intensity index of ISW based on wavelet coefficient were obtained.