surface low表面凹陷surfacen.表面；外表；平面adj.表面的；肤浅的vt.在 ... 上加表层；使 ... 成平面vi.浮到水面；显露；在表面工作surface dispersion表面色散Surface pulse wave表面脉冲波surface scattering表面散射surface smoothness表面平滑度,表面光洁度surface insulation表面绝缘surface soil layer表土层surface deficiency表面欠缺surface turbulence地面湍流surface topography表面形貌学surface roughening表面粗糙化