n. 1. the lower layer of the earth's crust, below the lithosphere. It is estimated as from fifty to several hundred miles thick. It is less rigid than the lithosphere, but still rigid enough to transmit some transverse seismic waves. [ RHUD ] [ WordNet 1.5 +PJC ]
[ruǎn liú quān, ㄖㄨㄢˇ ㄌㄧㄡˊ ㄑㄩㄢ, 软流圈 / 軟流圈] asthenosphere (geol., upper layer of mantle, viewed as viscous fluid); also called low velocity zone #159,376[Add to Longdo]
[ruǎn liú céng, ㄖㄨㄢˇ ㄌㄧㄡˊ ㄘㄥˊ, 软流层 / 軟流層] asthenosphere (geol., upper layer of mantle, viewed as viscous fluid); also called low velocity zone #303,376[Add to Longdo]
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