查询词典 species

The auther studied the community ecology of soil pro-tozoa by chosing the five representative forest types,korean-pine-broad-leaved forest,broad-leaved-korean-pine forest,korean-pine forest,broad-leaved forest andsylvesfriformis-pine forest in the coniferous-broadleaved mixed forest zone on northern slope of ChangbaiMountain during the summer of 1985-1987 in order tounderstand the composition of species and number of soilprotozoa in different forest types of the coniferous-broad leaved mixed forest zone;species dibersity indexand evenness index of soil protozoa in community;pro-tozoan density and biomass;noteworthiness of the re-gularity of protozoan number variance;distributionpattern in community;horizontal distribution;relation-ship of vertical distribution and soil micro-environ-ment etc.,and compare the similarities and differencesof these five forest types according to feature ofsoil protozoan community,and finally summarize thetheoretical regularity,the index or the evidonceof the best forest-type structure.

本文工作的目的是通过对不同林型下土壤原生动物的群落组成，群落结构特征的研究，以及对凋落物分解过程中原生动物种类和数量的初步调查，来探索土壤原生动物在指示环境条件和林型结构特征方面的可能性作用。

Two species distributed in Europe, Asia and NW North America; one species occurs in China.

在欧洲，亚洲和西北部的北美洲分配的两种；一种分布于中国。

About 35 species: tropical Africa, Asia, and Oceania; two species in China.

大约35种：非洲，亚洲和大洋洲的热带；中国有2种。

About 60 species: Africa, Asia, Oceania; 17 species in China.

大约60种：非洲，亚洲，大洋洲；中国有17种(9特有种)。

About 11 species: mainly in tropical Asia and Oceania; four species in China.

大约11种：主要在亚洲热带和大洋洲； 4种在中国。

About six species: mainly in Africa, Asia, and N Oceania; two species in China.

大约6 种：主要在非洲，亚洲和大洋洲北部；中国有2种。

About 90 species: tropical Africa, Asia, Central America, and Oceania; five species in China.

大约90种：热带的非洲，亚洲，中美洲和大洋洲；中国有5种(2特有种)。

About 16 species: Africa, tropical and subtropical Asia, Oceania; two species in China.

大约16种：非洲，热带和亚热带的亚洲，大洋洲；中国有2种。

About 20 species: Africa, tropical and subtropical Asia, Oceania; four species in China.

大约20种：非洲，热带和亚热带的亚洲，大洋洲；中国有4种。

However,Mo species over the catalystwithout calcination mostly existed in the form of octahedral coordination,while,more MoS_2O_x and MoS_(4-x)~(2-) species were formed after sulfidation.

不经焙烧的催化剂表面的钼物种更多以八面体配位钼物种形式存在，因而硫化后形成较多的MoS_2O_x和MoS_(4-x)~(2-)物种。

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。