asthenosphere

/as-then-uh-sfeer/US // æsˈθɛn əˌsfɪər //UK // (əsˈθiːnəˌsfɪə, -ˈθɛn-) //

软流层,岩流圈,软流圈,星云层

Definitions

n.名词 noun

1
Geology.
- : the region below the lithosphere, variously estimated as being from fifty to several hundred miles thick, in which the rock is less rigid than that above and below but rigid enough to transmit transverse seismic waves.