F region

美 　英

• un.F區(qū)；F層

英漢解釋

un.	1. F區(qū) 2. F層

英英解釋

n.	1. the highest part of the ionosphere that reflects high-frequency radio waves. It is divided into two layers, the F1, which extends upwards from 180 km (112 mi) and is present only during the day, and the F2, extending upwards from 300 km (186 mi).

例句

Plasma irregularities are ubiquitously existed in the ionosphere, including E region and F region.

電漿不規(guī)則體普遍發(fā)生于電離層中，包含E層及F層。

Daytime vertical and zonal velocities from 150-km echoes: Their relevance to F-region dynamics

來自150公里回波的白天垂直和帶狀速率：與F區(qū)域動力學(xué)的關(guān)系