Proper interface polarization of the material will enlarge the wave absorption frequency and improve the wave absorption performance.

合理利用材料的界面极化，可使材料的吸收频带大大加宽，提高材料的吸波性能。

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The measurement error of differential absorption laser radar caused by the shift of its center frequency in measuring atmosphenc density has been discussed particularly.

详细地讨论了微分吸收激光雷达测量气体密度时中心频率的漂移所引起的测量误差。

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This paper presents the absorption spectra of carbon monoxide measured by terahertz time-domain spectroscopy in the frequency range between 0. 2 and 2. 5 THz.

文章首次利用太赫兹时域光谱技术测量了一氧化碳气体在0．2～2．5太赫兹频谱范围内的吸收光谱。

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The Australian research focused on the thermal effects or specific absorption rate (SAR) of radio frequency radiation - a measure of its actual effects on brain tissue, whereas the earlier study simply looked at electromagnetic radiation levels.

BBC: Hands-free mobiles given safety boost

The Federal Communications Commission limits cell phone radio frequency energy emissions, called the specific absorption rate (SAR), at 1.6 watts per kilogram, as measured over one gram of tissue.

CNN: Scientists debate possible cell phone link to brain cancer