The locus of points in a chromaticity diagram that represents chromaticities of the radiation of Planckian radiators at different temperatures.

色度图中，表征不同温度下黑体辐射的色坐标的点的轨迹。

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This article presents a digital type electromagnetic radiation measurement system along with its schematic circuit diagram, high speed discrete data sampling method and FFT calculation methods.

本文详细介绍电磁辐射数字化测量系统，给出了电路原理图，离散化数据高速采样方法及FFT计算方法。

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The discrepancy is due to greenhouse gases in the atmosphere, which absorb and re-emit infra-red radiation, and thus keep the lower atmosphere, and the surface, warm (see the diagram below).

究其原因，原来是大气中的温室气体造成了这种温度上的差异。温室气体吸收，并再度释放了远红外辐射，使得底层大气与地表保持温暖(参见以下附图)。

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