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抹香鲸类

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The sperm whale is believed to dive deeper than any other cetacean .

人们相信,抹香鲸比其他鲸类动物潜得更深。

The sperm whale is believe to dive deeper than any other cetacean .

人们相信,抹香鲸比其他鲸类动物潜得更深。

NJ cluster analysis indicated that subclass Mysticeti is a monophyly whereas subclass Odontoceti is a polyphyly, including Delphinoidea, Physeteroidea, Ziphioidea and Platanistoidea.

NJ聚类分析结果与目前的主流观点基本相同,即须鲸亚目形成单系群而齿鲸亚目则为多系群,后者包括海豚总科、抹香鲸总科、喙鲸总科和淡水豚总科。

, and between L vexillifer and Neophocaena phocaenoides is 15. 03%(49/326bp). Two phylogenetic trees, constructed by using sequence data, suggest that Lipotes vexillifer does not share a direct common ancestor with Inia geoffrensis, thus provide molecular evidence in favor of the establishment of family Lipotidae, extant river dolphins might be a group of species with

系统发育分析结果表明:白暨豚与亚河豚没有直接共同的祖先,从而为白暨豚科的建立提供了有利的分子证据;现存的淡水豚类可能仅是外形上相似的物种群,Muizon(1984,1988a,1988b,1990)关于各类淡水豚分属于不同的总科的建议,从分子进化的角度看是完全可能的:抹香鲸类可能是最早从古鲸类中分化出来的类群。

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The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。

The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.

聚光:照片上是建在西班牙桑路卡拉马尤城的一座新型PS20塔式太阳能电站。被称为&日光反射装置&的镜子将太阳光反射到主塔,然后用聚集的热量产生蒸汽进而通过涡轮机转化为电力