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将光辐射功率测量用的电校准绝对辐射计与金点黑体炉在金凝固点（或熔化点）下的辐射功率进行比较，以确定绝对辐射计的系统误差。本文给出了辐射计的衍射损失，黑度修正及反射率修正，实际测量结果比计算结果大０．１９％。
The radiometric power of the radiometric calibration absolute radiometer and gold blackbody furnace at the freezing point (or melting point) of the radiation power to compare to determine the absolute radiometer system error. In this paper, the diffraction loss, blackness correction and reflectivity correction of the radiometer are given. The actual measurement results are 0.19% larger than the calculated results.