平坦均匀 meaning in English

eveness

Wavelengths or scales of surface heterogeneity are less than 20km . simulation results show that cbls do reach a quasi - stationary state correspondent to specified surfaces , after a long enough evolution . in this transition process and after that , horizontal statistics , i . e . mean potential temperature and vertical heat - flux , show profiles little differences to those over homogeneous flat surface . main effect of surface heterogeneity is to increase kinetic energy in cbl and the increase concentrates in the direction of surface heterogeneity . the time of cbl spent to reach its first peak of mean kinetic energy ,
模拟结果表明，在充分长的时间后，边界层达到一种适合于地面条件的准定常态。这种准定常态和向其过渡的过程中，水平平均的边界层廓线性质，如平均位温廓线垂直热通量廓线等几乎与平坦均匀地面的结果相同，或差异极小。地面非均匀性的主要作用是使边界层动能增大，并以地面非均匀性变化方向的动能增加为主。