A roof or a wall with higher-than-normal reflectance will absorb less sunlight.
反射率高于正常值的屋顶或墙壁吸收的阳光较少。
中级英语短文
This heavily modifies its physical properties, chemical compositions and mineralogical features, and in turn, the optical reflectance spectra of the moon, said the paper.
Reflectance of the surface of a material is its effectiveness in reflecting radiant energy. It is the fraction of incident electromagnetic power that is reflected at an interface. The reflectance spectrum or spectral reflectance curve is the plot of the reflectance as a function of wavelength.