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English-Hanzi/Asthenosphere
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
The asthenosphere is part of Earth's mantle. It is about 100km to 350km under the surface. It is the lower part of the upper mantle, and behaves as a hot viscous liquid.
软流圈 是 地球的 一部分。表面下 约 100km 至 350km。它是 上地幔的 下部，表现为 热粘性液体。