| 单词 | byerly, perry |
| 释义 | Byerly, PerryByerly, Perry (Edward)(1897–1978) seismologist; born in Clarinda, Iowa. His career at the University of California: Berkeley (1925–64) included the directorship of its seismographic station (1950–62). From examining travel-time curves of western North American earthquake waves, he postulated that the earth's mantle is discretely layered and penetrated by the base structures of mountains. |
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