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The results showed that the current taxonomic classification of the orders of Diphyllidea, Trypanorhyncha, Pseudophyllidea, Lecanicephalidea and Tetraphyllidea is appropriate and that the morphologic structure of the cestode scolex becomes more and more complicated in the evolution.

使用PAUP4.0b10软件构建的进化树显示，目前关于绦虫二叶目、锥吻目、假叶目、盘头目和四叶目的划分是比较合理的，绦虫进化基本遵循了头节形态从简单到复杂的进化规律。

For many species, chromosome number is a useful taxonomic character.

对许多物种来说，染色体数目是重要的分类学特征。

The coefficient of variation in seed size decreased when taxonomic levels ranged from high to low.

种子大小变异的幅度随着分类学水平的降低而减小。

In view of the many different interpretations of the systematics of these snakes, a "taxonomic conversion table" is provided here, with the aim of allowing the classifications used in different publications to be related to each other.

鉴于亚洲蝮在分类学上的许多不同译法，在这里提供了一份以适用于互相关联的不同出版物之间的"分类学转换表格"。

Pollen morphology of Chinese Datura and its taxonomic significance.

我国曼陀罗属的花粉形态及其在分类上的意义。

The smallest taxonomic subdivision of an ecospecies, consisting of populations adapted to a particular set of environmental conditions.

生态型生态种的最小划分单位，由适应某一特定环境条件的群体组成。

Neighbor-Joining analyses of teleost hepcidins showed that the eelpout 4cys variant arose independently from the notothenioid version, which lends support to adaptive evolution of reduced cysteine hepcidin variants on cold selection. The NJ tree also showed taxonomic-specific expansions of hepcidin variants, indicating that duplication and diversification of hepcidin genes play important roles in evolutionary response to diverse ecological conditions.

另外我们在另一种生活于南极水域的eelpout中也发现了一种含有4个半胱氨酸残基的hepcidin，而eelpout和南极鱼notothenioid在分类学上分属于不同亚目，是一类相差较远的物种，利用Neighbor-Joining方法建树分析发现eelpout的hepcidin虽然同样仅含有4个半胱氨酸残基，但和notothenioid的4cys_hepcidin有着不同的起源，这也进一步说明了hepcidin中半胱氨酸残基数目的减少确实是对寒冷环境的一种适应性进化。

The first part of this study ismainly about the taxonomic research of thermophilic fungi in China.

本研究的第一部分主要是进行了中国嗜热真菌的分类研究。

Bengalensis, L. Malabaricus, L. Sebae, L. Kasmira, cobia and Dark banded fusilier （Caesioninae: Pterocaesio tile）were incongruent with those derived from morphological taxonomic analyses.

和黑带鳞鳍梅鲷（Caesioninae： Pterocaesio tile））进行的聚类分析中，勒氏笛鲷与黑带鳞鳍梅鲷的聚类关系近于同属物种，与形态学分类存在矛盾。

So, in 2003, Hebert proposed a new ID system, sidestepping the cumbersome taxonomic legwork:"tag" species according to a segment of a mitochondrial gene.

这种分类方法通过分析生物自身遗传的线粒体DNA中的某一部分，就可以准确的判断出这种生物是属于什么种类。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。