一、序言评定定点黑体的有效辐射率时,通常假定空腔内壁面的温度是一样的。但在实际黑体中要考虑,由于它的开口部份的辐射损失,而产生温度下降,使有效辐射率的精度评定受到影响。本文主要报告有关高温分度用金点黑体的精度评定。二、由于辐射损失使空腔内壁面 First, the preamble to assess the effective blackbody emittance, usually assume that the temperature of the cavity wall is the same. However, in actual blackbody, the accuracy of the effective radiance rate should be affected because of the temperature drop due to the radiation loss of the opening portion. This paper reports mainly on the accuracy of high temperature indexing black gold body. Second, due to radiation loss to the cavity wall