D region

短语

【物理学】D 区(离地球表面约60～90公里处的电离层的最低部分)[亦称作D layer]

词形变化

the D region

别名

D-region

释义与例句

name
  1. 1.

    The innermost layer of the ionosphere, located 48 km (30 mi) to 90 km (56 mi) above the surface of the Earth.