1·Wind velocity also increases with altitude and may cause serious stress for trees, as is made evident by the deformed shapes at high altitudes.
风速也随着海拔高度的增加而增加，可能给树木带来严重的压力，这从高海拔地区的变形就可以看出来。
2·To criticize it for such failure is roughly comparable to criticizing a thermometer for not measuring wind velocity.
批评它的失败，就犹如批评温度计不测风速一样。
3·At high altitude you have jet streams, and the wind velocity is not the same at all altitudes.
在高海拔处会有高速气流，风速在不同的海拔处，并不相同。
4·A medium-thick shelterbelt can reduce wind velocity by more than 10 percent to a distance of 20 times the tree height on the leeward side and three times the height to the windward.
中等厚度的防风林在背风侧可在20倍于树高的距离而在迎风侧则在3倍于树高的距离上减小风速10%以上。
5·Using wind velocity profile law determinate the aerodynamic roughness length of wheats different growth periods: the average roughness of shooting period, is 6.
利用风速廓线法测定小麦不同生长期的空气动力学粗糙度：青苗期的平均粗糙度最大，为6。