基本解释[物理学]谱线黑度英汉例句双语例句The experimental results show that the blackness of the spectral line is linear to the logarithm of the sample accumulating time.实验结果表明：谱线黑度值与试样积累时间的对数值之间具有较好的线性关系。专业释义物理学谱线黑度