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介绍了黑体定义的一般概念，基尔霍夫黑体的物理模型，黑体辐射源的分类及光纤黑体传感器。同时介绍了实验室用黑体辐射源和在线黑体辐射源的主要特征，黑体空腔有效发射率分布及黑体空腔精度等级的计算。
The general concept of blackbody definition, the physical model of Kirchhoff blackbody, the classification of blackbody radiation source and the fiber blackbody sensor are introduced. At the same time, the main features of blackbody radiation source and online blackbody radiation source in laboratory, the effective emissivity distribution of blackbody cavity and the accuracy grade of blackbody cavity are introduced.