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平均丰度
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  average abundance
    The biomass of zooplankton in spring was high, species number and the dominant species number (3 species) were relatively less, and also appeared the characters of high dominance and average abundance of single dominant species and average value relatively of diversity index low (1.78).
    春季浮游动物生物量高,种类数及优势种种数(3种)相对较少,并呈现出单一优势种的优势度和平均丰度高,多样性指数均值低(1.78)的特征.
短句来源
    The biomass in the waters rose rapidly with gradual rising of water temperature from winter to spring, whiledominant species number did not rise synchronously, only one or two dominant species, such as Calanus sinicus, hadrapid increase of biomass (average abundance 142.10mg/m3, occupying 68.09% of the total abundance).
    随着冬季到春季水温逐渐升高,该水域生物量迅速上升,优势种种数却没有同步升高,仅有个别优势种,如中华哲水蚤(Calanussinicus)种群数量得到迅速的增长(平均丰度142.10mg/m3,占总丰度68.09%).
短句来源
    The preliminary study showed that the average abundance of dinoflagellate cysts is 3360 ind·kg-1(wet sediment).
    初步研究结果表明,厦门湾沉积物中甲藻孢囊的平均丰度为3360粒·kg-1湿重;
短句来源
  “平均丰度”译为未确定词的双语例句
    The average annual cell densities of nano and microalgae in the sea water, in the sediment and in the intertidal zone are 120×10 4 cells/m 3, 216×10 4 cells/cm 2 and 197×10 4 cells/g (or 17 793 5 cells/cm 2) respectively.
    海水中浮游藻类的年平均丰度为120×104个/m3; 沉积物中底栖藻类年平均丰度为216×104个/cm2;
短句来源
    Moreover,carbonator complexes(LnCO_3~+) were predicted to be the dominant species when pH between 7.2 and 8.0 and bicarbonate complexes(Ln(CO_3)_2~-) were predicted to be the dominant species when pH>8.0.The free ion specie(i.e.,Ln~(3+)) increases in these waters with pH decreasing and accounts for about 5.03%.
    Ln3+在巢湖和龙感湖水体中平均丰度为5.03%,Ln3+的丰度和pH值成反相关关系。
短句来源
    The percentage of REE-phosphate complexes account for 1.61% of the dissolved REEs.
    LnPO4在湖水中平均丰度为1.61%,但这种形式的稀土在巢湖和龙感湖中非常重要。
短句来源
    REE-sulfate,REE-chloride,REE-fluoride and REE-hydroxide complexes,are negligible and generally account for less than 1% of the total dissolved REEs.
    LnSO4,LnF2+,LnOH2+,LnCl2+等形态的各元素平均丰度均小于1%,在富营养化的淡水中通常可以忽略不计。
短句来源
    It is an important researching matter that the ecological characteristics of zooplankton in species,distribution,abundance and dynamics to hydrobiology scientist. The result indicated that the abundance of zooplankton ranged from 328.9 ind/m3 to 2 651.5 ind/m3 with an average of 2 651.5 ind/m3 through the analysis of structure of community in Bohai Bay.
    对渤海湾浮游动物群落结构进行了分析,结果表明,渤海湾浮游动物全年平均丰度为2651.5个/m3,最大为7 047.2个/m3,最小为328.9个/m3。 其中桡足类在各航次中占据大多数,是数量的主要构成者,且呈明显的季节变化。
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  average abundance
Free living marine nematodes were the most dominant group with an average abundance of (1.026 ± 0.206) × 106 ind m-2, accounting for 88.5% of total numbers, and an average of 85.4% lived in the surface layer (0-2 cm) of sediments.
      
Cell abundance ranged from 1.02 to 130.71 × 103 cells L-1 with a single peak on 6th Feb., and the average abundance was 28.11 ± 26.01 × 103 cells L-1 (n=90) during the winter time.
      
The constituents of plant ash have been discussed in relation to soil chemistry, pH, climate, mobility, average abundance in plant ash and exclusion mechanism of the flora.
      
In the population studied, the Syllidae dominated (37% of total identified species);Fabricia sabella was the most common species throughout the cornice, its average abundance being 38% of the total number of individuals in the population.
      
A suite of 11 fucalean species were dominant to a depth of 10 m with an average abundance of 28 m-2, while one species, Carpophyllum flexuosum, occurred mostly in deeper water.
      
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The concentrations of U and Th in the Xiangjiang Valley soils were determined by Instrumental Neutron Activation Analysis (INAA). The abundances of U and Th and their distribution characteristics in different great groups of soils and the soils derived from different parent materials are presented.

本研究利用仪器中子活化法对湘江谷地土壤中的天然放射性元素铀和钍进行了测定。文中报道了该地区不同土类和母质土壤及全区土壤中铀和钍的含量及其分布特征。在该区6种主要类型土壤中,铀和钍的含量分布规律基本相同,即山地草甸土>山地黄棕壤>水稻土>红壤>黄壤>紫色土。全区土壤中铀和钍的平均含量分别为4.20ppm和17.0ppm。该值均高于世界土壤中铀和钍的平均含量(2ppm和9ppm)及地壳平均丰度(2.7ppm和9.6ppm),同时也高于我国其它地区。文中还对该区土壤中铀和钍的比值(Th/U)进行了讨论。

he cell density and seasonal change of nano and microalgae in various habitats and the relations to some environmental factors are analysed in this paper. The average annual cell densities of nano and microalgae in the sea water, in the sediment and in the intertidal zone are 120×10 4 cells/m 3, 216×10 4 cells/cm 2 and 197×10 4 cells/g (or 17 793 5 cells/cm 2) respectively. The cell density of nano and microalgae in the sea water is bigger in summer than in autumn, in autumn than in spring, in spring than...

he cell density and seasonal change of nano and microalgae in various habitats and the relations to some environmental factors are analysed in this paper. The average annual cell densities of nano and microalgae in the sea water, in the sediment and in the intertidal zone are 120×10 4 cells/m 3, 216×10 4 cells/cm 2 and 197×10 4 cells/g (or 17 793 5 cells/cm 2) respectively. The cell density of nano and microalgae in the sea water is bigger in summer than in autumn, in autumn than in spring, in spring than in winter. In the intertidal zone, it (when the density is expressed in cells/cm 2) is bigger in spring than in summer, in summer than in autumn and in autumn than in winter, which is similar to the seasonal change of cell density of macroalgae, and it (when the density is expressed in cells/g) is bigger in spring than in autumn, in autumn than in winter, in winter than in summer, which is in accord with the seasonal change of macrobenthos biomass. There is positive correlation between cell density of nano and microalgae and salinity and dissolved oxygen, while it is negatively correlated with nutrients (N P Si).

本文对南麂列岛国家海洋自然保护区不同生境中的微、小型藻类的丰度和季节变化及其与环境因子之间的关系进行了研究。海水中浮游藻类的年平均丰度为120×104个/m3;沉积物中底栖藻类年平均丰度为216×104个/cm2;潮间带中微、小型藻类年平均丰度为196603个/g或17793个/cm2。海水中微、小型藻类丰度的季节变化为夏季高于秋季高于春季高于冬季;潮间带以个/cm2表示的藻类丰度的季节变化为春季高于夏季高于秋季高于冬季,这与大型海藻丰度的变化趋势基本相似;以个/g表示的藻类丰度的季节变化为春季高于秋季高于冬季高于夏季,这与大型底栖动物总生物量的变化趋势完全一致。南麂海域微、小型藻类丰度与盐度、溶解氧浓度呈正相关,与营养盐(N、P、Si)含量之间呈负相关。

This article reports the morphology, densities and distribution characteristic of 13 dinoflagellate resting cysts in sediment of Xiamen Harbor. The preliminary study showed that the average abundance of dinoflagellate cysts is 3360 ind·kg-1(wet sediment). Among them 2 species are toxic (Alexandrium tamarenes, A. minutum) and 2 species are harmful (Gonyaulax spinifera,Scrippsiella trochoide). These 4 toxic and harmful dinoflagellate cysts are rich in the sediments of Xiamen Harbor. They will be harmful to...

This article reports the morphology, densities and distribution characteristic of 13 dinoflagellate resting cysts in sediment of Xiamen Harbor. The preliminary study showed that the average abundance of dinoflagellate cysts is 3360 ind·kg-1(wet sediment). Among them 2 species are toxic (Alexandrium tamarenes, A. minutum) and 2 species are harmful (Gonyaulax spinifera,Scrippsiella trochoide). These 4 toxic and harmful dinoflagellate cysts are rich in the sediments of Xiamen Harbor. They will be harmful to the aquaculture in Xiamen Harbor and human health when the environmental factors are appropriate.

描述了厦门湾沉积物中的13种甲藻孢囊的形态与丰度、分布特征。初步研究结果表明,厦门湾沉积物中甲藻孢囊的平均丰度为3360粒·kg-1湿重;其中有2种有毒甲藻:塔玛亚历山大藻和小型亚历山大藻,有2种有害甲藻:具刺膝沟藻和锥状斯氏藻的孢囊,且数量较为丰富。这4种有害有毒甲藻孢囊在环境条件适合时将可能引发赤潮,对厦门湾水产养殖和人体健康产生危害。

 
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