以下是某个文献中的一小段话:
where σ is the Stefan-Boltzmann constant [5.67*10−8W/(m2K4)] and εp is the emission coefficient of the human body(standard value 0.97). Di comprises the diffuse solar radiation and the diffusely reflected global radiation, whereas ak is the absorption coefficient of the irradiated body surface area of short-wave radiation (standard value 0.7).