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degree of contamination     
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  污染度
     Analyzing the degree of contamination of hydraulic oil from form, source, reason and hazard of hydraulic oil contaminated by means of detecting degree of contamination and changing filter element, hydraulic components and degree of system contaminated, this article is putting forward the detailed actions of contamination control of hydraulic system within cold and hot tandem mill. It could practically enlighten to the technicians who engaged in design, manufacture, and maintenance of hydraulic system within cold and hot tandem mill.
     从液压油污染的形态,液压油污染的来源,液压系统污染的原因及危害性,液压油污染度的检测和过滤器滤芯的更换,液压元件和系统的污染度等级等方面对液压系统的污染度进行分析,提出了冷、热连轧机液压系统污染度控制的具体措施,对从事冷、热连轧机液压系统设计、制造和实际使用维护的工程技术人员有其实际的启发作用。
短句来源
  污染程度
     It is concluded that the degree of contamination and the potential ecological risk of the river mouths are low except that those of Haihe River mouth are moderate.
     结果表明 ,除海河口污染程度和潜在生态风险略高外 ,环渤海湾其他河口重金属及砷污染程度及其对水域造成的潜在生态风险较低。
短句来源
     Objective To analyze the content of citreoviridin in rice and evaluate the degree of contamination.
     目的用高效液相色谱(HPLC)检测粮食中黄绿青霉素(citreoviridin,简称CIT)的含量,用于评价粮食受青霉菌污染程度
短句来源
     The result indicated that the infected snail rate reflects the degree of contamination of wild dung, and that the infected snail density reflects the infectibility of the field.
     钉螺阳性率与阳性螺密度间无相关性。 说明钉螺阳性率是反映滩地污染程度的指标,而阳性螺密度则反映滩地的易感性,两者不能替代。
短句来源
     On the basis of making a thorough investigation and study of the pollution source and pollution pathway of Yujiagou area, this paper made the ground water quality analysis and the experiment of gangue抯 leaching and soaking out, by a synthetical study we drew conclusion that the salts in the leaching water of waste dump is the primary pollution source for groundwater of Yujiagou area, and assessed the degree of contamination of the groundwater in investigated area.
     在对于家沟地区地下水的各种污染源和污染途径进行了深入调查研究的基础上,进行了地下水水质分析以及煤矸石的淋溶实验和浸出实验,获得了大量真实可靠的数据,再通过综合分析研究认为露天煤矿排土场淋溶水中的盐类是造成于家沟地区地下水污染的主要原因,并对研究区地下水水质的污染程度做作出了评价。
短句来源
     Results showed that ecological distribution of both aerobic heterotrophic and mercury resistant,was closely related to the degree of contamination of water and sediment.
     结果表明,好氧异养菌和抗汞细菌的生态分布与河水、底泥的污染程度有密切关系。
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  “degree of contamination”译为未确定词的双语例句
     Degree of contamination of analyzed kimberlites has been estimated by Si/Mg, C. I. =(SiO2 +Al2O3 + Na2O)/(MgO + 2K2O), Mg/(Mg + Fe), SiO2, Al2O3 and Na2O contents.
     l——(SiO_2+Al_2O_3+Na_2O)/(MgO+2K_2O)、Mg/(Mg+Fe)比值及SiO_2、Al_2O_3及Na_2O含量研究了金伯利岩的混染程度。
短句来源
     Result: The degree of contamination,meconium aspiration syndrome are lower in group A than those in group B.There's significance difference in both group esp PH,PO_2.PCO_2.BE in neonate umbilical cord blood blood-gas analysis(t=2.00,5.69,4.38,5.07 respectively.P<0.05,0.01,0.01,0.01).
     两组新生儿出生后脐血血气分析的pH、PO2、PCO2、BE值均具显著性差异(t值分别为2.00、5.69、4.38、5.07,P值分别小于0.05、0.01、0.01、0.01);
短句来源
     EqP method was applied in recent years in China and mainly to evaluate the quality of sediment, in accordance with the principle of equilibrium partition, proceed with combined phase of pollutants, seek for the controlling factor of pollutants through analyzing the change of controlling factor, confirm the degree of contamination.
     平衡分配法是近几年在国内开展的用于评价沉积物的一种研究方法 ,它主要运用平衡分配的原理 ,从污染物质的结合相入手 ,找出能够控制污染物质的主要因子 ,通过分析该主控因子的变化情况 ,判断沉积物中污染物质对环境的危害程度 ,该方法在一定程度上解决了传统沉积物质量评价方法不具有时空可比性的弊端。
短句来源
     the degreeof remelting of source rock is 30-55% and is rising with evolution ofgranitic magma. the degree of contamination of magma is rising too.
     其演化过程源岩重熔程度为30~55%,随着岩浆演化其重熔程度增加,岩浆混染程度增大。
短句来源
     Using Extraction Luminostiy method to determine the plumbum in the soil,and analyzing the degree of contamination and the regularing of distribution,the outcome indicates that the plumbous content is higher than that of the cleanness district in the soil of both sides of suburb highway of Chaozhou,it is its 1.25~1.90 times,and as the distance increases,the plumbum content of soil is reduced gradually.
     结果表明:潮州市郊区公路两侧土壤中铅的含量比清洁区高1.25~1.90倍,并随距离增大,土壤铅含量逐渐降低。
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  degree of contamination
The variation in the degree of contamination is significant and indicates a non-uniform source of uranium and thorium from which radiogenic lead was deriven.
      
The results clearly show that a strong correlation between the degree of contamination of the substrate and pull strength values exists.
      
Substrate surface contamination is found to be a controlling factor in epitaxial layer continuity and surface morphology; as the degree of contamination decreases, growth varies from discontinuous to terraced continuous to terrace-free continuous.
      
The relative degree of contamination declined in the following sequence: commercially pure SiC>amp;gt;SiC-5 wt pct Al2O3-5 wt pct SiO2>amp;gt;slurry cast alumina>amp;gt;recrystallized alumina>amp;gt;zircon type A>amp;gt;oxygen deficient high-purity zirconia.
      
This applies particularly to closed water circulation systems, in which the degree of contamination of water increases with time.
      
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The charge coupled device is a new type of photoelectric sensor.The application of doped polycrystalline silicon film in the charge coupled sensor is analysed. Through the doping techniques as proposed in this article, the potential barriers between the transfer electrodes can be removed to keep the gate oxides from being exposed, thus improving the transfer efficiency and stability of the device. Furthermore, the photoelectric conversion efficiency of CCD can also be increased by applying the polycrystalline...

The charge coupled device is a new type of photoelectric sensor.The application of doped polycrystalline silicon film in the charge coupled sensor is analysed. Through the doping techniques as proposed in this article, the potential barriers between the transfer electrodes can be removed to keep the gate oxides from being exposed, thus improving the transfer efficiency and stability of the device. Furthermore, the photoelectric conversion efficiency of CCD can also be increased by applying the polycrystalline silicon transparent electrodes.The quality of the polycrystalline silicon film depends on the temperature at which deposition takes place, the density of silane, as well as the degree of contamination of water, oxygen and other impurities. The resistance of the polycrystalline silicon film is dependent on the temperature at which doping occurs, the length of time during which doping occurs, and the thickness and quality of the film. The penetration of the impurity into gate oxides is a very serious problem as it can cause unstability of the work of CCD at room temperature. It is therefore necessary to strictly control the doping conditions or to use the SiO2/Si3N4 sandwich structure.Self-doping of polycrystalline silicon film is a new film-growing technology which contributes to improving the device's source and drain characteristics and stability. By using PC13 as the self-doper, SiH4 as the source and hydrogen as the carrier gas for the silane to deposit for 4 minutes (without the self-doper) and another 11 minutes (after the addition of the doper), a sheet resistance of 15-30Ω/ is obtained which can meet the requirements of device design. Experiments show that PCl3 used as doper for self-doping is just as effective as PH3 or B2H6 and possesses some other desirable features at that.

本文讨论了电荷耦合器件(CCD)的多晶薄膜的淀积,研究了多晶硅薄膜的掺杂,报导了以三氯化磷为淀积多晶硅薄膜的掺杂剂实验结果。文中还分析了多晶硅对CCD器件性能的影响。

An experiment was conducted to study the residue of permethrin,cy-permethrin and decamethrin by using the gas chromatography technic.Results showed that the penetratiag ability of all three pesticides were very weak and contaminated only the surface of the crop tissue.The degree of contamination was closely correlated with the concentration of pesticides-used,number of applications,and number of days to harvesting the rice grain,especially if the pesticides were used after heading.With 2-3 applications...

An experiment was conducted to study the residue of permethrin,cy-permethrin and decamethrin by using the gas chromatography technic.Results showed that the penetratiag ability of all three pesticides were very weak and contaminated only the surface of the crop tissue.The degree of contamination was closely correlated with the concentration of pesticides-used,number of applications,and number of days to harvesting the rice grain,especially if the pesticides were used after heading.With 2-3 applications of the recommended concentration of 7.5g/mou for permethrin,5g/mou for cypermethrin and 0.75g/mou for decamethrin in the case of the first rice crop,and 3-4 applications of 7.5g/mou and 15g/mou of permethrin to the late rice crop,almost no pesticide residue was detected in the brown rice(residue being below 0.1 ppm).In the rice husk,however the residue of permethrin and cypermethrin was in the range of 2.14 ppm-18.5 ppm.The contamination ability of permethrin on the husk and the brown rice differed as much as 19-185 times.In the straw,the residue varied at a range of 1.85-6.0 ppm Rain fall did not have much effect on the amount of residue found,much residue was detected even when the pesticides were used in rainy season.

本文报导了用气相色谱测定技术,研究二氯苯醚菊酯、氯氰菊酯和溴氰菊酯在水稻上的残留动态。试验结果表明,三种药剂穿透能力都很弱,仅污染作物组织表面。污染程度与施药浓度、施药次数、离稻谷收割间隔天数密切相关,尤其抽穗后施药。在推荐使用浓度下,即早稻使用有效成分二氯苯醚菊酯7.5克/亩,氯氰菊酯5克/亩,溴氰菊酯0.75克/亩,施药2~3次;晚稻使用二氯苯醚菊酯7.5克/亩和15克/亩,施药3~4次。在糙米中均未检出农药(残留量低于0.1ppm)。但在谷壳中,二氯苯醚菊酯和氯氰菊酯的残留量最低也有2.14ppm,高达18.5ppm,而溴氰菊酯使用量只有二氯苯醚菊酯的十分之一。二氯苯醚菊酯对谷壳及糙米污染的差异可相差19~185倍。在稻草中的残留量为1.85~6ppm。降雨对药剂的残留量的影响不突出,在多雨季节施药仍有较高的残留量。

A systematical survey of mercury resistant bacteria in downstream of Jiy-un River polluted by mercury has been carried out. Counts of aerobic heterotr-ophic bacteria and mercury resistant bacteria in this portion of the river were examined, and the mercury resistant ability of mercury resistant bacteria was also measured. The various kinds of mercury resistant bacteria were identified. Results showed that ecological distribution of both aerobic heterotrophic and mercury resistant,was closely related to the degree...

A systematical survey of mercury resistant bacteria in downstream of Jiy-un River polluted by mercury has been carried out. Counts of aerobic heterotr-ophic bacteria and mercury resistant bacteria in this portion of the river were examined, and the mercury resistant ability of mercury resistant bacteria was also measured. The various kinds of mercury resistant bacteria were identified. Results showed that ecological distribution of both aerobic heterotrophic and mercury resistant,was closely related to the degree of contamination of water and sediment. Population of aerobic heterotrophic bacteria was dependent on BOD5 and COD , while the ecological distribution of mercury resistant bacteria in the river was dependent on population of heterotrophic bacteria and on the degree of pollution by mercury . The ratio of counts of mercury resistant bacteria to counts of heterotrophic bacteria in water was less than that in sediment. There was seasonal variation in population of mercury resistant bacteria, which was higher in spring than in autumn. Mercury resistant bacteria from this river belong to 13 genuses, the majors weres Pseudomonas and Bacillus, were 35% and 28% of all mercury resistant respectively, the others were Achromobacter, Ale-aligenes, Aerotnonas, Enterbacter, Escherichia, Proteas, Arthobacter, Kurthia, Staphlococcus, Brevibacterium, and Clostridium. For most of these bacteria, there are some common physiological characteristics: catalase positive, able to metabolize glucose, utilize citrate and gluconate and reduced nitrate. They can resistant to the concentration of 5-30ppm, but for phenylmercuric acetate, the concentration limit is 0.03-3ppm. After acclimation, however some Bacillus can withstand HgCl2 up to 200-300ppm, and they can transform 96-98% when HgCl2 concentration is 250-300ppm.

对受汞污染的蓟运河下游河段的抗汞细菌进行了系统的调查。测定了好氧异养细菌和抗汞细菌的数量,试验了它们的抗汞能力,鉴定了抗汞细菌的种类。结果表明,好氧异养菌和抗汞细菌的生态分布与河水、底泥的污染程度有密切关系。好氧异养菌量决定于COD和BOD_5,河流中抗汞细菌的生态分布决定于异养菌量和汞污染的程度。河水中抗汞菌量与异养菌量之比值低于底泥。抗汞菌量还随季节而变,春季高于秋季。 从本河段分离的抗汞菌经鉴定属于13个属,主要有Pset: domonas和Bacillus,它们分别占总抗汞菌株数的35%和28%。其他菌属有Achromobacter、Alcaligenes、Proteus、Escherichia、Entero-bacter、Aeromonas、staphylococcus、Brevibacterium、Kurthia、Clostridium、Athrobacter,其中大多数细菌的生理特性为接触酶阳性,代谢葡萄糖,利用葡萄糖酸盐和柠檬酸盐,还原硝酸盐。它们能抗5—30ppm的氯化汞,而抗醋酸苯汞的浓度仅为0.03—3ppm。然而驯化后一些芽孢杆菌抗汞浓度提高到200—300ppm。当氯化汞初始浓度为2...

对受汞污染的蓟运河下游河段的抗汞细菌进行了系统的调查。测定了好氧异养细菌和抗汞细菌的数量,试验了它们的抗汞能力,鉴定了抗汞细菌的种类。结果表明,好氧异养菌和抗汞细菌的生态分布与河水、底泥的污染程度有密切关系。好氧异养菌量决定于COD和BOD_5,河流中抗汞细菌的生态分布决定于异养菌量和汞污染的程度。河水中抗汞菌量与异养菌量之比值低于底泥。抗汞菌量还随季节而变,春季高于秋季。 从本河段分离的抗汞菌经鉴定属于13个属,主要有Pset: domonas和Bacillus,它们分别占总抗汞菌株数的35%和28%。其他菌属有Achromobacter、Alcaligenes、Proteus、Escherichia、Entero-bacter、Aeromonas、staphylococcus、Brevibacterium、Kurthia、Clostridium、Athrobacter,其中大多数细菌的生理特性为接触酶阳性,代谢葡萄糖,利用葡萄糖酸盐和柠檬酸盐,还原硝酸盐。它们能抗5—30ppm的氯化汞,而抗醋酸苯汞的浓度仅为0.03—3ppm。然而驯化后一些芽孢杆菌抗汞浓度提高到200—300ppm。当氯化汞初始浓度为250—300ppm时其转化率可达96—93%。

 
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