参考黑体用于对系统的标定，水浴环境腔体和真空系统用来消除环境和大气的影响。
The reference blackbody cavity was employed to calibrate the system and the vacuum cooling water bath system was used to decrease the influence of surroundings.
测量中使用了红外辐射计，并用圆柱形镜反射腔获得温度同地物相同的黑体辐射，并由已知比辐射率的参考板标定环境辐射。
Measurements can be made with an infrared radiometer. Blackbody radiation at the same temperature of the object is obtained using a cylindrical direct reflection cavity.
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