查询词典 preferential species

This new species of ancient scientists named "Puijila darwini", was considered to be fin-footed animals evolution of an important missing link, fin-footed animals refers to modern seals, sea lions and walrus and other species.

这种远古新物种被科学家命名为"Puijila darwini"，被认为是鳍足类动物进化过程中缺失的重要环节，鳍足类动物是指现代海豹、海狮和海象等物种。

Widely distributed in Central America of fresh water and salt waters, the United States for the main freshwater aquaculture species. 1999 U.S. freshwater aquaculture production accounted for about 81 percent of the large warm-water species of fish, fork spots to fish tail as the Ministry of Agriculture to promote the country's fresh water breeding improved varieties have a very obvious advantages: First of Table no scales no small thorn, processing convenience and the other is the quality and refine, nutrient-rich, easy to digest and absorb the third is of miscellaneous eating habits, fast-growing, high yield, strong adaptability and easy to keep the fourth character is tame, like cluster activities , High density of aquaculture, particularly the pond custody and cage culture Fifth Tansi, easy fishing, Youdiao suitable for the development of leisure industry.

广泛分布于美洲中部的淡水和咸水水域，为美国的主要淡水养殖的品种。1999年约占美国淡水养殖总产量的81%，该鱼种是大型温水性淡水鱼类，斑点叉尾回鱼作为农业部向全国推广的淡水养殖的优良品种具有很明显的优点：一是体表无鳞没有小刺，加工方便；二是内质细嫩，营养丰富，容易消化吸收；三是食性杂，生长快，产量高，适应性强，易于饲养；四是性格温顺，喜好集群活动，可以高密度的养殖，特别是池塘主养和网箱养殖；五是贪食，易垂钓，适合发展休闲游钓业。

The results showed that diploid and tetraploid had higher root activity, flagleaf soluble protein content, SOD and CAT activity before anthesis. However, the rootactivity, flag leaf soluble protein content, SOD and CAT activity of diploid and tetraploiddeclined more quickly and became lower than those of hexaploid species from 15 days afteranthesis. While MDA content increased more quickly and became higher than those ofhexaploid species from 5 days after anthesis. Correlation analysis showed that delaying the flag leaf senescence can promoted transfer of nitrogen and dry matter, increasedaccumulation of nitrogen and dry matter after anthesis, enhanced grain and protein yield.

结果表明，与普通小麦和小黑麦相比，二倍体和四倍体材料开花以前具有比较高的根系活力、可溶性蛋白含量、SOD和CAT活性；开花以后，根系活力、旗叶可溶性蛋白含量、SOD和CAT活性快速下降，MDA含量快速上升，衰老加快；相关分析表明，延缓小麦旗叶衰老进程，可以促进花后氮素和干物质运转，增加花后氮素和干物质积累，提高籽粒产量和籽粒氮素积累量。

Methods The location and elevation of modern and Late Pleistocene species occurrences were collected from data bases for 26 species living in mountain or flatland environments.

方法现代和晚更新纪种类发生的地点和海拔从数据库被收集了为26 个种类居住在山或平地环境里。

The experimental results show that, Mn〓O〓 and Na〓Zr〓, which were cubic crystal and floccule in catalyst surface respectively, were active species, Mn〓O〓 was main active species and addition of Zr further activated methane molecules to improve methane conversion.

分析结果表明，Mn〓O〓和Na〓Zr〓是多组分甲烷氧化偶联催化剂的活性组分，在催化剂表面上分别以立方晶体和絮状物存在，且Mn〓O〓起主要作用，Zr的加入进一步活化了甲烷分子，提高了甲烷的转化率。

The scope of research activities in this society covers the ancient mollusca and recent species (including terrestrial, freshwater, medical and marine molluscs), involving the areas as follows: ancient species evolvement and environmental variance, morphology, floristics, biological diversity and protection, genetics and breeding and the security concerning, pathology, aquaculture and ecological environments, etc.

中国贝类学的研究范围涵盖古贝类和现生贝类（陆生贝类、淡水贝类、医学贝类和海产贝类），涉及的研究方向有：古贝类进化与环境变迁，形态、区系、生物多样性及其保护，遗传育种及其安全性，病害，养殖与生态环境等，取得了丰硕的研究成果，促进了我国贝类学理论和相关技术的应用与发展。

In morphology, it is resemble to the female of Narcissus flycatcher, which is a partly sympatric distribution species. But there are some remarkable differences between the two species, especially in the songs of the male during the breading season.

它在形态学上与其部分同域分布的黄眉姬鹟的雌鸟有些相似，但又有区别，特别是二者的雄鸟在繁殖期的鸣唱截然不同。

Species diversity of these forest types also significantly influenced the nutrient characteristics of plant foliage, litter quality and most of the soil properties, but the species diversity of the 3 forest layers had different influences on them.

各林型物种多样性对植物叶片养分特征，凋落物品质和土壤理化特性也都不同程度存在显著影响，且乔灌草三层的物种多样性的影响不同。

Under CITES list of endangered species, the Arowana or Scleropages formosus is amongst the Species threatened with extinction which are or may be affected by trade.

在下面引用濒危物种的目录， Arowana或者Scleropages formosus在有的危险哪个是或者可能以贸易影响的灭绝的种类中。

Formate species were reactive towards nitrates to yield formyl nitro compound,an intermediate critical for the formation of cyanide and isocyanate species by further reacting with nitrates.

在NO+O_2+C_2H_4条件下，催化剂表面除了生成硝酸盐和甲酸盐物种之外，还有-C N，-NCO和HCONO_2物种的生成。

I was up all night because I was in pain, she said.

我整夜，因为我在疼痛，她说。

A crow caws /craoks.

乌鸦叫。 51-论文网