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Wang. They are half-shrub belonging to section Dracunculus of genus Artemisia. with close kinships and quite similar morphological characteristics. Distributed in sand of steppe region and desert region in northern China, they are edificators or dominant species of sand vegetation and important wind break and sand fixation plants.

Wang是同属于蒿属龙蒿组的半灌木蒿类,亲缘相近,形态特征十分相似,分布于中国北方的草原区沙地和荒漠区,并成为沙生植被的建群种或优势种,是我国防风固沙的重要植物。

The results show that:(1)The classification and appraisment of Elaeocarpaceae are mainly on the basis of its fruits and flowers.(2)There are 9 species in 2 genera of Eleacocarpaceae in Hunnan province, Elaeocarpus.

结果表明:(1)杜英科的叶同其花、果是分类和鉴定的主要依据;(2)湖南现有杜英科2属12种,其中长柄杜英Elaeocarpus。

The glutamate oxaloacetate transaminase isozyme of thirty-three accessions of cultivated and wild buckwheat belonging to eight species of genus Fagopyrum including seven species of the big-achene group and one species of the small-achene group were studied by means of polyacrylamide gel eletrophoresis.

用聚丙烯酰胺凝胶电泳技术时荞麦属8个种(含大粒组7个种和小粒组1个种)33份荞麦资源的谷草转氨酶同工酶进行了研究。

Corolla tube usually shorter than calyx, constricted at throat; flowers homostylous

通常的花冠筒短于花萼,缢缩的在喉部;花花柱同长 7 Androsace 点地梅属

It suggested that the species or subspecies of Hordeum were genetically related to rye and wheat, which also belong to the tribe of Triticeae, while rice was related to maize.

以玉米为外类群,采用邻接法进行系统发育关系分析发现,同属于小麦族的大麦属植物、黑麦和小麦间亲缘关系较近,而水稻与玉米则相对较近。

Taxonomic studies of ten species of the genus Juglans based on isozymic zymograms.

根据同工酶酶谱对核桃属十个种分类学的研究。

Taxonomic studies of ten species of the genus Juglans based on isozymic zymograms.

标题 根据同工酶酶谱对核桃属十个种分类学的研究。

Two sibling species Helicoverpa armigeraH(u|¨bner and H.assulta are serious crop pests in China.They have the similar morphological,biological and ecological characterstics,as well as they can even hybridize with each other.Their host plant ranges, however,are quite different.The former is a typical polyhpagous species,and its host plant range including at least more than 60 crop species such as cotton,corn,wheat,soybean, tobacco,and tomato,and 67 wild plant species from about 30 plant families including Malvaceae,Solanaceae,Gramineae,Leguminosae,etc.

可同域发生的棉铃虫Helicoverpa armigeraH(u丨¨bner和烟夜蛾H.assulta是铃夜蛾属两近缘种昆虫,二者具有相似的生物学和生态学习性,甚至杂交可育,但它们的寄主范围却截然不同,棉铃虫是多食性昆虫,烟夜蛾则是典型的寡食性昆虫。

Based on above studies, some main conclusions were obtained as follows : 1 the diatoms forming mats in low latitude west pacific is"shade flora"diatom Ethmodiscus rex Hendey; 2 the sites found diatom mats are zone distributed, the direction is NW-SE and most distribute in the deep water area with flat seafloor, between 17°N~20°N and the water depth 4837-6150 m below Carbonate Compensation Depth (CCD 3) AMS 14C dates show that the sediments rich in diatom mats occurred during 16.0 ~ 28.6 ka B.P., which means the bloom mainly occurred in last glacial maximum, while there are not diatom mats deposits in other layers; 4 A total of 101 diatom taxa belonging to 40 genera had been identified from the 155 samples in the two cores WPD 03 and WPD 12, and the relative percentage of Thalassionema frauenfeldii are the highest, Thalassionema nitzschioides、Azpeitia nodulifera、Hemidiscus cuneiformis、Nitzschia marina take the second place.

14C年期间,即&勃发&发生于末次冰期最盛期;4在WPD 03和WPD 12两个岩芯共155个样品中共鉴定硅藻40属101种,且Thalassionema frauenfeldii的相对百分含量最高,Thalassionema nitzschioides、Azpeitia nodulifera、Nitzschia marina、Hemidiscus cuneiformis等次之,这五种硅藻占整个硅藻物种相对百分含量的85%左右,说明在该海域表层水体硅藻席沉积过程中,这五种硅藻最容易与成席硅藻在同时期的环境中生存,形成勃发;5MIS3期的晚期,该区域表层海水盐度降低,这有助于该区水体的成层化,从而使&树荫种&硅藻开始勃发,导致&秋季倾泻&;6末次冰期由于南极中层水北扩,南大洋中层水将富含硅酸盐的海水带入了研究区,即南大洋的&硅溢漏&作用,使该区域硅藻得以勃发,同时,铁输入的增多,可能也是造成硅藻勃发的主要原因之一。

Since the independence of the five countries of Central Asia,China has establish the economic contact with them,which gained the wide academic concerns. The bilateral cooperation has extended into man areas with the constantl enlarged channel;it still remains a primar stage with man problems,though.

中亚五国独立后,中国同中亚五国的经济合作引起学术界广泛关注,并对双方经济合作现状认识基本一致,即虽然双方的经济合作已发展到多个领域、层次不断提高、产业合作有所加强、合作路径不断拓宽,但总体上仍属初级阶段,经济合作还存在着诸多问题。

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But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊!不用提了。提到肉,真是糟透了。

Tristan, I have nowhere to send this letter and no reason to believe you wish to receive it.

Tristan ,我不知道把这信寄到哪里,也不知道你是否想收到它。