down-flow

英['daʊnfl'əʊ] 美['daʊnfl'əʊ]
  • 下向流
  • down adv.向下prep.沿着...而下adj.向下的;消沉的;无礼的n.绒毛;汗毛v.击倒;打败;吞下;被抑制
  • powder n.粉末;粉;火药;细雪vt.洒粉于;使变成粉;重击vi.变成粉;涂粉