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平均丰度
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  average abundance
     In sharp alternation between the two seasons, high variability of environment is observed. Average abundance of meiofauna is 1025.40±168.84ind/10cm~2, average biomass is 1195.87μg dwt/10 cm~2;
     小型底栖动物全年平均丰度为1025.40±168.84ind/10cm~2,平均生物量为1195.87μg dwt/10 cm~2;
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     The average biomass of the macrobenthos in the Changjiang estuary is 17.57g/m2 , and the average abundance is 150ind.
     长江口大型底栖生物平均生物量为17.57g/m2,平均丰度为150ind.
短句来源
     The average abundance (8.32×10 7cells/m 3) of phytoplankton from Chukchi Sea was higher than that (1.58×10 6cells/m 3) in Bering Sea.
     楚克奇海浮游植物的平均丰度 ( 8.32× 1 0 7个 /m3)远高于白令海( 1 .5 8× 1 0 6个 /m3)。
短句来源
     Results showed that there was clearly seasonal change for average abundance of Chaetognatha that was autumn(540ind/10~(2)·m~(3))>summer(322ind/10~(2)·m~(3))>winter(235ind/10~(2)·m~(3))>spring(33ind/10~(2)·m~(3)).
     结果表明:毛颚类总丰度有明显的季节变化,4季平均丰度(不含台湾海峡水域)为秋季(540ind/102m3)>夏季(322ind/102m3)>冬季(235ind/102m3)>春季(33ind/102m3);
短句来源
     average abundance of macrofauna is 1574 ind.
     大型底栖动物年平均丰度为1574 ind.
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  mean abundance
     The mean abundance, biomass and production of meiofauna were 1.40x10~(6) ind·m~(-2), 1.05x10~(6)g dwt·m~(-2) and 9.45x10~(6) g dwt·m~(-2)·a~(-1) at B2 station in four cruises in Jiaozhou Bay in 2002, respectively.
     胶州湾B2站小型底栖动物的年平均丰度为1.40×10~6 ind·m~(-2),生物量为1.05×10~6g dwt·m~(-2),生产量为9.45×10~6g dwt·m~(-2)·a~(-1)。
短句来源
     The mean abundance, biomass and production of meiofauna were 0.82xl0~(6) ind·m~(-2), 0.62xl0~(6)g dwt-m~(-2) and 5.56xl0~(6) g dwt·m~(-2)·a~(-1) in the Southern Yellow Sea, respectively.
     南黄海8月小型底栖动物的平均丰度是0.82×10~6ind·m~(-2),生物量为0.62×10~6g dwt·m~(-2),生产量为5.56×10~6g dwt·m~(-2)·a(-1)。
短句来源
     The total mean abundance and biomass were 183.32×10~4ind.
     年平均丰度和生物量分别为183.32×10~4ind.
短句来源
     The mean abundance, biomass and production of meiofauna are (1584±686) ind.
     小型底栖动物的平均丰度为(1584±686)ind.
短句来源
     Mean abundance of the parasite was more than 6.32 in almost all months,except for a low level of 0.46 in January 2002.Statistical analysis showed that changes in mean abundance of the parasite were significantly seasonal ((F=12.58)>F_(0.01[17,882])=1.98).
     平均丰度也是在2002年1月较低(0.46),其他月份都高于6.32,但感染丰度表现出显著的季节性变化(F=12.58>F0.01[17,882]=1.98)。
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  “平均丰度”译为未确定词的双语例句
     The annual averaging meiofaunal abundance amounted to 1.51×10 6ind/m 2, with higher values of 2.73×10 6 and 2.75×10 6ind/m 2 at station 95B1 and 95B2 respectively, and the lowest value of 0.46×10 6ind/m 2 at station 95B3. The maximum biomass of 1.90g/m 2(d.w.)
     结果表明 ,小型底栖生物的年平均丰度为 1 .51× 1 0 6ind/m2 ,最高值出现在 95B1和 95B2站 ,分别为 2 .73× 1 0 6 和 2 .75× 1 0 6ind/m2 ,最低值出现在 95B3站 ,数量为 0 .46× 1 0 6ind/m2 。
短句来源
     The abundance of Rathkea octopunctata was as high as 64.7 and 118.0 ind/m~3 in February and March,accounting for 99.5% and 98.0% of total medusae abundance at the same month.
     八斑芮氏水母23、月份的丰度均很高,分别为64.7ind/m3、118.0ind/m3,分别占水母总平均丰度的99.5%和98.0%。
短句来源
     0.30 gdwt.m-2 and 5.5 ? 2.7 gdwt. m-2a-1respectively.
     大型底栖动物平均丰度、生物量和生产量分别为1239±639.6indm~(-2)、6.4±6.5gdwtm~(-2)和9.5±8.6gdwt.m~(-2)a~(-1)。
短句来源
     561.5 ind.
     小型底栖动物平均丰度、生物量和生产量分别为1087.3±561.5ind.
短句来源
     There were 917/cm~3, 6982.5/cm~3 and 627/cm~3 marine benthic diatoms at Longshan, Wenling and Linhai, respectively.
     小型底栖硅藻的平均丰度分别为:917个 cm3、6982 5个 cm3和627个 cm3,温岭最高;
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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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  mean abundance
Its metallicity indicates that the object belongs to the old Galactic disk (the mean abundance of the iron-group elements V, Cr, and Fe for IRAS 23304+6147 is [X/H]=-0.61 dex).
      
The lanthanides are even less enhanced: for La, Ce, Pr, and Nd, the mean abundance relative to iron is [la/Fe]=+0.26.
      
The mean abundance of organisms was 637 ind/m2 and the mean biomass was 2.3 g/m2.
      
The component community is constituted by seventeen helminth species, which frequency and mean abundance show a bimodal pattern.
      
The prevalence and mean abundance of infectious GIT nematode larvae on the pasture were used as measures of pasture contamination.
      
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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。

This paper presents a new idea by modelling the high chromosphere of source material of solar energetic particles. Based on the temperature as determined by the data of overabundance of heavy ions relative to local galactic abundances in solar energetic particle events, the high chromosphere is suggested to be the source of solar energetic particles. According to a great number of observations, the acceleration region of solar energetic particles during solar flares is most likely to occur in the low corona...

This paper presents a new idea by modelling the high chromosphere of source material of solar energetic particles. Based on the temperature as determined by the data of overabundance of heavy ions relative to local galactic abundances in solar energetic particle events, the high chromosphere is suggested to be the source of solar energetic particles. According to a great number of observations, the acceleration region of solar energetic particles during solar flares is most likely to occur in the low corona and even up to tens thousand kilometres height. Therefore, the source region of solar cosmic rays is generally not so same as that of the particle acceleration. Moreover, the author presents further a model of mechanism of overabundance of heavy ions in solar energetic particle events. From the model, the heavy nuclei with low first-ionization potentials in the source are preferentially affected by electromagnetic force of force-free field in the frozen magnetic field of sunspot and are transported to sunspot region by this action, their abundances are larger in the acceleration region before the onset of solar flares and are overabundant in solar cosmic rays.

本文利用太阳能量粒子事件中重离子平均丰度过量的资料,计算得到太阳能量粒子源物质的温度,提出了描述太阳宇宙线能量粒子源物质的新模式——高色球层模式;太阳耀斑观测确定,太阳宇宙线耀斑的加速区一般最可能出现在低日冕甚至高达几万公里的高度,从而,太阳宇宙线的源和加速区通常不位于同一区域;进而提出了描述太阳能量粒子事件中重离子丰度过量的可能机制——其源物质是通过太阳黑子的冻结型无力场从高色球层输送到活动区,形成耀斑前加速区内重离子丰度大和耀斑后宇宙线中重元素丰度的过量.

The Sangang auriferous formation in Chongli area of Hebei Province is located at the north margin of the North China platform, consisting chiefly of late Archean intermediate and basic volcanic-sedimentary series, with an isotopic age of 2600 m. y.. This series of rocks has been metamorphosed into hornblende and granulite facies, with rich abundance of Au-Ag, formed a tight linear fold, in which fractures were well developed. Magmatite is mainly composed of basic volcanic rocks and granite. Magmatic eruption...

The Sangang auriferous formation in Chongli area of Hebei Province is located at the north margin of the North China platform, consisting chiefly of late Archean intermediate and basic volcanic-sedimentary series, with an isotopic age of 2600 m. y.. This series of rocks has been metamorphosed into hornblende and granulite facies, with rich abundance of Au-Ag, formed a tight linear fold, in which fractures were well developed. Magmatite is mainly composed of basic volcanic rocks and granite. Magmatic eruption is developed in three epoch: Archean; Hercynian movement; and Yenshan movement. Gold deposits are controlled by NW and NNW fracture structurcs. Two types of gold deposits are recognized: auriferous quartz (simple vein and compound vein) and gold-bearing altered rocks.Gold mineralizations occur in metamorphic rocks underiying the Sangang group with distinct stratabound feature. The gold mineralization is of multi-stage. The lead isotope of ores is the ancient weak anomalous lead with a model age of 2.5 - 7 m. y.. The sulfur isotope ratio being as a mean value of -10 per mil indicates that the ore deposits have undergone erosion and weathering and that the mineralization is associated with the surface water. The source material is derived from the Sangang group. The metallogenic pattern is volcanic-sedimentary-regional metamorphic; migmatitic-dilatancy-magmatitic. Four prospects have been suggested by the author.

崇礼-带晚太古代桑干群含金地层,系由-套中-基性火山-沉积岩系组成,其含金丰度高出地壳平均丰度的2~5倍.金矿化主要赋存于桑干群上部变质岩中,具有明显的层控特征.根据成矿特点,提出了四个找矿远景区.

 
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