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科瓦列夫斯基,A.O.
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科瓦列夫斯基,A.O.
Encyclopedia
理学
〔西方生物学史重要人物〕
释
Alexander Onufrievich Kovalevsky
科瓦列夫斯基,A.O.
(1840-11-19~1901-11-22)俄国胚胎学家。发现了多细胞动物在胚胎发育过程中均有原肠胚期,为生物进化论提供了胚胎学证据。
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Ancient Buildings at Yushantun
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ancient buildings at Yuyuan Village
Ancient Buildings at Zhangguying Village
ancient buildings at Zhengyimen
ancient building surveying
ancient camphor tree at Qionglai City
ancient camphor tree in Faxiang temple
ancient cartography
Ancient Cedar Mountain of Huanglong in Songmingxian
Ancient Cedar Tree in Zhong Temple in Qionglai
ancient ceramic relics restoration technology
Ancient Characters by Using Inscription on Bronzes
ancient chart
ancient Chinese academy
ancient Chinese aids and staff system
ancient Chinese architectural laws and regulations
ancient Chinese architecture grading system
ancient Chinese art and technique of flying
Ancient Chinese Art Education
ancient Chinese articles of clothing
ancient Chinese artifacts cast iron decarburized in solid state
ancient Chinese artifacts of forgeable cast iron
ancient Chinese belt accessories
ancient Chinese bronze weapons with meteoritic iron blades
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更新时间:2025/12/16 21:33:20