1、The presence of dunes or antidunes in streams alternately decreases and increases the local depth.河流中沙垄和逆行沙垄的存在，使局部水深交替地增大或减小。
2、A real optical superposition image was formed by dark-adapted crystalline cones for an object at different distances and its size decreased as the object distance increased.经过暗适应的晶体柱可以对不同物距的目标形成清晰的正重叠像，像的大小随物距的增大而减小。
3、Thermal resistance could decrease with the contact angle.热管热阻值随接触角增大而减小。
