higher troposphere造句

• The vertical velocity in low troposphere is larger than high troposphere , and vertical velocity in flood year is also larger than that in drought year . the vertical velocity on different levels show that there exists distinct sinking motion from midlevel to uplevel of troposphere in drought years and updraft in whole atmosphere in flood years
  垂直分布曲线均呈s形，垂直上升速度在对流层低层大于对流层上层，多雨年大于干旱年;不同层次上垂直速度分布图表明，旱年对流层中上层盛行下沉气流，而涝年整层大气始终表现为上升运动。