The systematic position of the genus Onychium Kaulf.
金粉蕨属的系统位置长期以来一直存有争议。
But the systematic position of Trimeniaceae is in dispute.
但有关腺齿木科的系统位置存在争议。
But the systematic position of Amborellaceae is under dispute.
但有关互叶梅科的系统位置存在争议。
The controversy about the classification and systematic position of Acorus L. has lasted for about two century.
摘要菖蒲属的分类和系统地位近两个世纪以来一直存在较大的争议。
The new genus could be assigned to Myrmeleontoidea , but its exact systematic position was impossible to determine.
新属可归于蚁蛉总科，但科级位置不能确定。
Conclusion: the differentiation degree of peripheral white blood cells of vertebrate may be concerned with the systematic position of the animal.
结论：脊椎动物白细胞形态结构的分化程度可能与动物的分类地位有关。
The evolution of the perforation plates of the vessel elements and the systematic position of genus Souliea were discussed in the paper based on the present observation .
根据观察结果，对导管分子穿孔板的演化及黄三七属植物的系统位置进行了分析。
The relationship among Cambrian lobopodian, onychophorans, tardigrades and arthropods is further discussed, and a possible systematic position of the Cambrian lobopodians is suggested.
探讨了寒武纪叶足动物与有爪动物、缓步动物和节肢动物之间的关系及其可能的系统位置。
This paper summarized the research of Luehdorfia chinensis Leech, including Systematic Position, Biological Characteristics, Feeding and Protection.
本文从分类地位、生物学特性、取食和保护等几方面，对中华虎凤蝶研究进展作了综述。
This paper summarized the research of Luehdorfia chinensis Leech, including Systematic Position, Biological Characteristics, Feeding and Protection.
本文从分类地位、生物学特性、取食和保护等几方面，对中华虎凤蝶研究进展作了综述。
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