subaerial

/suhb-air-ee-uhl, -ey-eer-ee-uhl/US // sʌbˈɛər i əl, -eɪˈɪər i əl //

次高空,次高空作业,空中以下,空中下层

Definitions

adj.形容词 adjective

The Atlantic plain as a whole thus has three principal divisions: a submerged portion, a marsh portion, and a subaerial portion.
He entirely agreed with the doctrine of the subaerial degradation of the land and the erosion of valleys by running water.
Since the goal of all material transported by running water is the sea, subaerial erosion means degradation of the surface.
Some kaolins appear to have been formed by weathering and others by subaerial action.