Intensity differences from the background field occur at particle boundaries. 在颗粒的轮廓会产生背景区域的亮度差异。
The developing background of variable domain transpiration cooling control theory, the mechanism of aerodynamics and its characteristics are analyzed. 对变域传热发汗控制理论的产生背景及其空气动力学机理和变域传热发汗理论的特点进行分析。