air section

• 空气段

air section的用法和样例：

例句

1. As the air proceeds along the test section the boundary layer thickens.
   当空气沿着试验段流动时附面层逐渐变厚。
2. The walk up Fifth Avenue through the slush of the sidewalks and the dankness of the air had tired him.
   纽约第五大街人行道上污雪成浆，空气阴冷潮湿，走这一段够累的。