查询词典 systematics

Phylogenetic relationships among these families and within the Hamamelidaceae have been key questions in studies of angiosperm systematics and evolution.

这些科之间的谱系关系以及金缕梅科内部的谱系关系是研究被子植物系统和进化的主要问题之一。

This conclusion, combined with the data obtained from the short-lived Hf-W and Sm-N d isotopic systematics, suggests that the Moon was initially accreted at 4.5 Ga, followed by development of the global lunar magma ocean. The primary lunar crust is composed by ferroan anorthosite which was produced by flotation of plagioclase during crystallization of the LMO. However, the mafic minerals, coevally crystallized with the plagioclase, sank to the base of the LMO due to their high density, and made up the main part of the lunar mantle, which served as the source during later mare basaltic magmatism.

根据这一年代资料，结合对月岩样品进行的短半衰期Hf-W与Sm-Nd同位素体系的研究结果，认为月球大致形成于45亿年，其后开始由岩浆海导致的内部核－幔－壳的分异，岩浆结晶的低密度斜长岩构成最初的月壳，而密度大的岩石构成月幔，而此月幔则成为后来月海玄武岩的主要岩浆源区。

We reviewed the researches on the Asian Paleogene euprimates of the past 80 years, and suggested a new definition of Anthropoidea within phylogenetic systematics.

全面综述了过去80年中对于亚洲古近纪真灵长类研究的成果，提出了关于类人猿类界定方法的新建议。

Studies on Systematics of Collembola Collembola belongs to Arthropoda, Hexapoda. It is the most aboundace and cosmopolitan groups of the basal Hexapoda. 686 genera and 7895 species belongs to this class have been reported now from all over the world.

弹尾纲系统分类学研究弹尾纲Collembola，隶属于节肢动物门Arthropoda，六足总纲Hexapoda，是低等六足动物中种类最多、分布最广的一个类群。

According to the hydrology principle and the ecology systematics principle,we put forward the computational method of ecological and environmental water demand in river basion from eight aspects.

水是生态环境的控制性要素，水资源的不合理开发、利用和管理导致了严重的生态环境问题。

This is the web page of Biochemical Systematics and Ecology.

这是《生物化学分类法和生态学》的网页。

This is the web page of Systematics and Biodiversity.

这是系统分类学与生物多样性的网页。

The journal dedicates to the studies of the geobotany, plant ecology and plant systematics, including comparative vegetation studies, patterns and processes in vegetation, experimental taxonomy and biosystematics and biodiversity etc.

该杂志致力于植物地理学、植物生态学和植物分类学的研究，包括比较植被研究、植被的形态与加工过程、实验分类学以及生物系统学与生物多样性等等。

Eckenwalder Lab, Department of Botany is primarily dedicated to research in woody plants including biosystematics, chemotaxonomy, numerical taxonomy and morphometrics, paleobotany, and cladistics, accommodation of hybridization in phylogenetic analysis, biogeography, systematics and reproductive biology of convolvulaceae.

植物学系Eckenwalder研究室主要致力于木本植物的研究，其研究领域包括生物分类学，化学分类学，数量分类学和形态测定，古植物学和遗传分类学，系统分析中杂交调节，生物地理学，滕本植物的分类学和生殖生物学等。

RAPD may be valuable to research of systematics of the ciliate.

表明RAPD技术对纤毛类原生动物的系统分类是有价值的。

I will not give up and will not call you any more at the same time.

我不会放弃，同时我也不会在给你打电话了。

China is an uneven distribution of resources cross country.

摘要我国是一个资源分布不平横的国家。