A value related to the hiding power of a coating. The ratio of reflectance of the coating over black and white backgrounds at equal film thickness.
同涂层遮盖力相关的一个数值，以相同的涂层的厚度在黑色和白色背景下涂层反射系数的比值。
2
Algal limestone reservoirs appear to have relatively high gamma ray value in well logs and strong reflectance signatures in seismic profiles.
藻灰岩储层在测井曲线上显示出较高的自然伽马值，在地震剖面上表现为强反射特征。
3
Based upon microcal rock and reflectance of coal rock, the paper analyses the heatalteration of ripening index of organic matter. It has practical value for evaluating gas storageconidion of coal bed.