低层急流 meaning in English

low level jet stream

The shear experienced by the departing aircraft was due to vertical shear as the plane passed through the low level jet . based on the winds measured on - board a flight departing 8 minutes earlier , there was a rapid increase in head wind component , from 13 kt at 1 , 420 ft to 39 kt at 3 , 100 ft
起飞的飞机所遇到的风切变是由于该机经过低层急流的垂直切变所引致，根据一架在8分钟前起飞的航机量度到的风速，显示逆风由1 , 420尺的每小时13海里急速增加到在3 , 100尺的每小时39海里。