lower atmosphere短语¹⁰⁶¹⁰⁰⁺⁵ 基本例句 低层大气 During daytime, thermal factors play dominant role on the structure of UBL, such as the intensity of mixed layer and temperature in the lower atmosphere of urban area. 在白天，城市结构的热力因子则成为影响市区混合层强度以及湍流运动特征等边界层结构的主导因素； cnki