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淡水    
相关语句
  freshwater
    The important function and significance of geophysical surveying technique in freshwater exploration in changjiang underwater delta
    物探在长江水下三角洲勘查淡水资源的重要作用和意义
短句来源
    Research on the Actuality of Freshwater Resource and Water Seepage in Agricultural Dripping Irrigation in China
    中国淡水资源现状及农业滴灌水分入渗的研究
短句来源
    Mineralization more than brackish water 6.0 g/L were not suitable for farmland irrigation, must be blended freshwater with brackish water to mineralization less than 4.0 g/L.
    矿化度6.0g/L以上的咸水不适宜农田灌溉,必须经过淡水、咸水调配后矿化度在4.0g/L以下方可进行农田灌溉。
短句来源
    STUDY ON THE ENRICHMENT OF SOME HEAVY METALS IN THE FRESHWATER SURFACE MICROLAYER
    天然淡水表面微层中某些重金属富集现象研究
短句来源
    An Research on the quantity of Discharged Pollutant of Freshwater Breed Aquatics in Hangjiahu Area
    杭嘉湖地区淡水水产养殖污染物排放总量的研究
短句来源
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  fresh water
    800~23? 200 a B P,respectively. The groundwater with pH 7.2~8.3 and TDS<300mg/L in aquifer Ⅲ is a potential fresh water source for exploitation.
    Ⅲ1含水层组地下水的贮留时间距今2 300~15 700a,Ⅲ2的贮留时间距今5 800~23 200a,地下水pH为7.2~8.3、溶解固体量小于300mg/L、水质较好的淡水,具有开发应用前景。
短句来源
    Strategy of Conjunctive Use of Saline and Fresh Water
    咸水与淡水联合运用的策略
短句来源
    Because of the shortage of fresh water and the competition of the industry, it increasingly depends on the pool-quality water (saline water or city sewage) in agriculture produce.
    淡水资源的短缺和工业用水的竞争,使农业生产对劣质水(咸水或城市污水)利用的依赖性日益增加。
短句来源
    In fact, rainwater is the renewable and liquid fresh water, and can be utilized. So rainwater totally accords with the definition of the traditional water resource, and it ought to be dealt with as total amount of water resource.
    事实上,雨水是可更新、利用的液态淡水,完全符合传统水资源的定义,理应将其作为水资源总量来对待。
短句来源
    In Yinbei irrigation district, the aquifer is fine sand loam or fine sand within 50 m in depths and the thickness of aquifer normally is 20~40m. Because of irrigation by yellow river, ground water in this part is fresh water or slightly salty water.
    银北灌区50m深度范围内,含水层为粉细砂、细砂,含水层厚度一般20~40m,由于长期过量引黄灌溉,地表水渗漏对地下水常年大量补给,形成较好的浅层淡水和微咸水资源。
短句来源
更多       
  fresh
    800~23? 200 a B P,respectively. The groundwater with pH 7.2~8.3 and TDS<300mg/L in aquifer Ⅲ is a potential fresh water source for exploitation.
    Ⅲ1含水层组地下水的贮留时间距今2 300~15 700a,Ⅲ2的贮留时间距今5 800~23 200a,地下水pH为7.2~8.3、溶解固体量小于300mg/L、水质较好的淡水,具有开发应用前景。
短句来源
    A study of groundwater-bearing structures and occurrence of fresh groundwater in the Xi'ning Basin
    西宁盆地储水构造及其地下淡水赋存规律研究
短句来源
    Because of the shortage of fresh water and the competition of the industry, it increasingly depends on the pool-quality water (saline water or city sewage) in agriculture produce.
    淡水资源的短缺和工业用水的竞争,使农业生产对劣质水(咸水或城市污水)利用的依赖性日益增加。
短句来源
    In fact, rainwater is the renewable and liquid fresh water, and can be utilized. So rainwater totally accords with the definition of the traditional water resource, and it ought to be dealt with as total amount of water resource.
    事实上,雨水是可更新、利用的液态淡水,完全符合传统水资源的定义,理应将其作为水资源总量来对待。
短句来源
    In Yinbei irrigation district, the aquifer is fine sand loam or fine sand within 50 m in depths and the thickness of aquifer normally is 20~40m. Because of irrigation by yellow river, ground water in this part is fresh water or slightly salty water.
    银北灌区50m深度范围内,含水层为粉细砂、细砂,含水层厚度一般20~40m,由于长期过量引黄灌溉,地表水渗漏对地下水常年大量补给,形成较好的浅层淡水和微咸水资源。
短句来源
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  freshwater
Effect of Toxic Industrial Pollutants on the Activity and Isoforms of Acid DNase in the Freshwater Snail Viviparus viviparusL.
      
A preparation of lysozyme from a freshwater bivalve, Unio pictorum, has been isolated by sorption to chitin, and its physicochemical properties have been studied.
      
Respiration Rate and Species-Specific Lifespan in Freshwater Bivalves of Margaritiferidae and Unionidae Families
      
We studied changes in the respiration rate in five species of freshwater bivalves as a function of animal age and size.
      
The longest and shortest lifespan among the studied mollusks was specific for the pearl mussel Margaritifera margaritifera(Ru= 37 kJ and T20= 36 years) and the freshwater mussel Anodonta anatina(Ru= 8 kJ and T20= 8 years), respectively.
      
更多          
  fresh water
Bacterial bioluminescence was applied to detection of general toxicity (MIT test) and genotoxicity (SOS-lux test) of some chemicals, seawater, and fresh water.
      
Studies on Biodiversity in the Plankton, Benthos, and Fish Communities, and the Ecosystems of Fresh Water Bodies Differing in Pr
      
These changes suggest a significant role of the blood albumin system in adaptation of the Caspian sturgeon migratory species to fresh water life conditions.
      
Fresh water lenses formed by seepage from irrigation channels
      
A two-dimensional model of a steady-state fresh water lens, formed above saline water as a result of mole irrigation, is investigated in the hydrodynamic formulation [1].
      
更多          
  fresh
Results showed that arbuscular mycorrhizal (AM) inoculation significantly improved the height, stem diameter, and fresh weight of P.
      
The forest litter layer can be divided into fresh litter layer (L), fermentation layer (F) and humus layer (H), which may represent different litter decomposition stages.
      
In contrast to those in the soil, the soil animals in the litter layer generally tended to increase in both group abundance and density from the top fresh litter layer to the bottom humus layer.
      
Compared with non-transgenic plants, the fresh fruit length of T4 generation of transgenic papaya increased 2.6%-5%, and the diameter decreased 0.6%-1.5%.
      
The flesh thickness of fresh fruit increased 12%-15%, which made it fitter for eating.
      
更多          
  fresh-water
Shape of the fresh-water lens resulting from canal seepage
      
Sulfur Compounds in Bottom Sediments of Fresh-Water Basins (Mouth of the Severnaya Dvina River and Rybinsk Water Reservoir)
      
Contents and correlations of some trace elements (Sr, Li, F, Ba, and others) indicate that primary sediments formed under humid-semihumid paleoclimate in a fresh-water paleobasin (lagoon) characterized by occasional increase in salinity.
      
The operation conditions of the inner surface of the long-distance Astrakhan-Mangyshlak fresh-water main and the properties of corrosion deposits on it are considered.
      
In ornamental carps from the collection of the Experimental Station, All-Russia Research Institute of Fresh-Water Fisheries, fish with a dirty dark tint of body color among orange and white fish were found.
      
更多          
  其他


In Heilonggang region in Hebei province, the fact of shorting of fresh water res-ource is one of the restraintion in developing the agriculture. The result of study by irrigating saline water in Nanpi pilot (1980-1991) shows that the yields of successive cropping of wheat and corn were 484.8-622.8 kg/mu, yield increased 1.06-1.65 times than that of non-irrigated; In the condition of concentrated rainfall in rainy season, the soil desalinized in root zone, the salt accumulation due to saline water irrigation...

In Heilonggang region in Hebei province, the fact of shorting of fresh water res-ource is one of the restraintion in developing the agriculture. The result of study by irrigating saline water in Nanpi pilot (1980-1991) shows that the yields of successive cropping of wheat and corn were 484.8-622.8 kg/mu, yield increased 1.06-1.65 times than that of non-irrigated; In the condition of concentrated rainfall in rainy season, the soil desalinized in root zone, the salt accumulation due to saline water irrigation can be leached; By irrigating with saline water and fresh water alternatively or mixture water, the water quality may be improved and the irrigated farm land may be enlarged and high production of crops may by achieved.

河北省黑龙港地区淡水资源短缺,是农业生产发展的制约因素。南皮试区(1980~1991)咸水灌溉的研究结果表明,利用2~5g/l的咸水灌溉,小麦、玉米两季亩产达到484.8~622.8kg,比不灌的旱作增产1.06~1.65倍;在汛期集中降雨淋洗的条件下,根层土壤不积盐;实行咸淡水轮灌、混灌,改善水质,增辟水源,获得作物丰产。

This paper submited the strategy of conjunctive use of saline and fresh water based on the study of salt tolerance of crop. The rotation and mixing irrigation of saline and fresh water can alleviate salt damage of crops, improve soil envi- ronment, increase irrigation water resource ,enlarge irrigation area and achieve a bumper harvest.

该文在研究作物耐盐性的基础上,提出咸淡水联合运用的策略——实行咸淡水轮灌与混灌,可以减缓盐分对作物的危害,改善土壤环境,增辟灌溉水源,扩大灌溉面积,夺取农业丰收。

On the basis of analyzing the now regime and pollution pattern of the sea area of Jiulong Jiang Firth, the pollutant nonlinear diffusion phenomenum in the seaward firth with mixed-up salt and fresh water is taken into consideration. The finite element method is used for conducting numerical analysis and the stability of the numerical solution is investigated. Compering the calculation value with the measured one, it is verified that the result obtained has better accuracy.

在分析九龙江河口海域流态和污染规律的基础上,考虑盐淡水混合河口海域的污染物非线性扩散现象,用有限元解法进行数值分析计算,并对数值解的稳性进行了探讨,通过计算值与实测值的比较、验证,具有较好的精度.

 
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