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。
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.
结果表明，对不同氘丰度的气体样品，单次测定的相对标准偏差好于0 2 % ，氘丰度测量值在0 2 %的误差范围内是可信的。
The results indicate:relative standard deviations are better than 0.2% for gas samples of different deuterium abundance. Measure value is believable in the error range of 0.2%.
气体浓度光学分析方法具有测量范围宽、精度高、非接触在线测量等优点。
The optical analysis method of gas concentration has advantages of large measurement range, high precision, untouched on-line measurement and so on.
由于镜片的反射率在不同的环境中是不同的，我们在这里利用腔衰荡四腔镜轮换的方法，在常态下测得了四腔镜的反射率，同时得到了腔内气体在测量范围的吸收情况。
Using the cavity ringdown method and Changing the used mirrors, we measured the reflectivity of four mirrors under the ordinary condition and obtained the absorption of the cavity.
取而代之的作法是用理想气体温度计精确地测量分布于较宽温度范围内的几个定点的温度值。
What is done instead is to use the ideal-gas thermometer to determine accurate values for several fixed points that cover a wide temperature range.
取而代之的作法是用理想气体温度计精确地测量分布于较宽温度范围内的几个定点的温度值。
What is done instead is to use the ideal-gas thermometer to determine accurate values for several fixed points that cover a wide temperature range.
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