On the basis of knowing the relative energy distributionofspectrum of light source, the irradiance measuring principle is described.
在知道光源相对光谱能量分布的基础上，阐述了辐照度测量原理。
2
This paper proclaims similarity ofdistribution between light strength of monochromic Fraunhofer's single - slit diffraction and square - wave frequency spectrum.
本文揭示了单色光夫琅和费单缝衍射的光强分布与矩形波频谱分布之间的相似性。
3
According to the requirement of the total diving number and the assumption of the distribution type, the fatigue load spectrum for the 7000m deep manned submersible is given.