asthenosphere

名词 asthenosphere:

1. the lower layer of the crust

as.then.o.sphere

n.（名词）
A zone of the earth`s mantle that lies beneath the lithosphere and consists of several hundred kilometers of deformable rock.
软流圈：地球中地幔的一个区域，在岩石圈之下，包括几百公里可变形的岩石

来源：
Greek asthenôs [weak] * see asthenia
希腊语 asthenôs [不牢固的，衰弱的] *参见 asthenia
sphere
sphere