单词 | asthenosphere |
释义 | asthenosphere A layer of the earth's mantle (see earth) that underlies the lithosphere at a depth of about 70km. The velocity of seismic waves is considerably reduced in the asthenosphere and it is thought to be a zone of partial melting. It extends to a depth of about 250 km where rocks are solid |
随便看 |
|
物理辞典收录了3346条物理词条,基本涵盖了常用物理知识及物理英语单词词组的翻译及用法,是物理学习的有利工具。