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   of runoff 的翻译结果: 查询用时:0.176秒
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of runoff
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  径流
     2) Narrow terrace can reduce 20%~45% of runoff and 31.5%~71.2% of sediments;
     ②水平条中土埂可减少径流20%~45%,减少土壤侵蚀31 5%~71 2%;
短句来源
     During the first four years initially from the orchard establishment,the values of runoff coefficient,the runoff sediment concentration and the erosion modulus fell sharply,from 0.378,5050 g/m~3 and 1962.04 g/m~2 respectively,down to 0.103,350 g/m~3 and 131.42 g/m~2,respectively.
     在建园初期4年内,25°坡地柑桔林径流系数、径流含沙量和侵蚀模数急剧下降,径流系数由0.378下降到0.103,径流含沙量由5050 g/m3下降到350g/m3,侵蚀模数由1 962.04g/m2下降到131.42 g/m2。
短句来源
     The rate of total nitrogen loss ranges in 2.68-14.48 mg·m -2 ·min -1 in runoff, which is much lower than that of 100.01-172.67 mg·m -2 ·min -1 in sediment of runoff.
     估算出的各土地利用类型总氮流失速率,地表径流水相为2.68~14.48 mg·m-2·min-1,径流沉积物相高达100.01~172.67 mg·m-2·min-1。
短句来源
     The annual mean runoff on the ground and modulus of runoff were 105.8 L and 10.58 m~(3)·km~(-2)·a~(-1) inside the mixed plantation. But those in pure plantation were 1 349.05 L and 134.9 m~(3)·km~(-2)·a~(-1).
     年均地表径流量105.8 L,径流摸数为10.58 m3.km-2.a-1,纯林分别为1 349.05 L和134.9 m3.km-2.a-1,土壤侵蚀模数为0.65 t.
短句来源
     the maximum, mean and minimum of runoff energy were 741.5,98.4,0.272 J/m 2.The erosive energy varied because of different rainfalls, durations and densities of rainfalls.
     径流能量最大值为741.5 Jm2 ,最小值为0 .272 Jm2 ,平均值为98 .4 Jm2 。
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  “of runoff”译为未确定词的双语例句
     As a result,the average annual areal precipitation is 80.6×108m3,the average ratio of runoff and areal precipitation(R/P) is 0.38,its maximum and minimum is 0.53 and 0.32 respectively.
     计算结果表明:开都河流域面雨量年平均为80.6×108m3,径流量与面雨量之比(R/P)平均为0.38,最大为0.53,最小为0.32。
短句来源
     Under the designed storms, there are 39860m3/km2 of runoff yield and 736. 64t/km2 of sediment erosion respectively in wasteslope, however, the runoff yield and sediment erosion are 4790m3/km2 and 8. 37m3/km2 and 98. 86 % respectively in the slope with Shaji shrub cover degree of 0. 7 which are 87. 98 % and 98. 86 % reduction of that in wasteslope.
     在设计暴雨条件下,荒坡径流量、侵蚀量分别高达39860m3/km2、736.64t/km2,而郁闭度0.7的沙棘林径流量、侵蚀量分别为4790m3/km2、8.37t/km2,比荒坡分别减少87.98%和98.86%。
短句来源
     The total amounts of runoff and sediment are significantly different among the four treatments with the order of D>C>B>A. Compared with the treatment D,the runoff amounts of treatments A,B and C were reduced by 79.19%,64.02% and 51.53%,respectively,the soil erosions are reduced by 92.04%,84.49% and 78.70%,respectively.
     在雨季(5~10月)4个处理的水土流失量为D>C>B>A,与对照D相比,处理A、B、C的径流量分别减少了79.19%、64.02%和51.53%,侵蚀量分别减少了92.04%、84.49%和78.70%;
短句来源
     The coefficients of variation(Cv) of runoff and areal precipitation are equally 0.17.
     面雨量与径流量的年际相对变化幅度是一样的,变差系数Cv值为0.17。
短句来源
     Under circumstances of rainstorms, annual hedge plants grown on 25° slopeland can cause a reduction of runoff by 22~43 percent and that of erosion induced sand content by 94~98 percent.
     在暴雨情况下,25°陡坡耕地上,一年生植物活篱笆可以使径流量减少22%~43%,侵蚀产沙量减少94%~98%。
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  相似匹配句对
     Forest and Slope-runoff
     森林对坡面产流的影响研究
短句来源
     runoff increased with the precipitation.
     径流随着降水的增加而增加。
短句来源
     Forest and Slope-runoff
     森林对坡面产流的影响研究
短句来源
     runoff increased with the precipitation.
     径流随着降水的增加而增加。
短句来源
     Forest and Slope-Runoff
     森林与坡面产流研究
短句来源
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  of runoff
Following the principles of runoff-collecting forestry and applying the forest structure investigation results, the authors developed a formula to calculate appropriate density for forests on the basis of different diameters at breast height (DBH).
      
This technique is used to construct a model of runoff transformation for fragments of the Volga basin.
      
Methods of the use of radar information in applied hydrology (in particular, for calculation of runoff probability) are developed.
      
The anthropogenic components of runoff dynamics from drained fields are calculated.
      
However, some components of the total runoff into the Arctic Ocean feature distinct and fairly complicated disturbances in the homogeneity of runoff variations.
      
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Since the beginning of the last half century, the science of hydrology through successive steps of development has advanced to the realm of quantitative analysis. Engineers employed empirical methods to compute river discharges from precipitation data in answer to the ever-increasing demands made upon hydrologic analyses for engineering works. Yet for the phenomena of conflux of flows from precipitations, there exist only meager and fragmental quantitative analyses, without, so far, a systematic study of their...

Since the beginning of the last half century, the science of hydrology through successive steps of development has advanced to the realm of quantitative analysis. Engineers employed empirical methods to compute river discharges from precipitation data in answer to the ever-increasing demands made upon hydrologic analyses for engineering works. Yet for the phenomena of conflux of flows from precipitations, there exist only meager and fragmental quantitative analyses, without, so far, a systematic study of their underlying theories recorded in literature. On account of this, the progress of hydrology in respect to theory as well as to prac- tice has been retarded. By means of hydrodynamic analysis, the author has tentatively made an approach to the establishment of such a scheme of theories, in which he divided the rainfall-runoff phenomena into three parts for separate analyses, i. e., the occurrence of runoff due to rainfall at a surface point, the surface flow, and. the conflux of channel flows. This paper is devoted to the first part, which is, in essence, an analysis of the basic hydrologic phenomena. The theories thus established may be used as a guide for various hydrologic analyses in practice, may be based upon to examine the validity of various methods of hydrologic calculations, and may be further used to develop an approximate yet rational method for computing discharges from precipitation data. In this paper, the author proposes a scheme of underlying theories for analyzing the hydrograph of surface flow due to rainfall at a point, in which the essence of basic hydrologic phenomena is revealed, and this is accompanied with calculations of an example. In the earlier years, R. E. Horton established a theory of correlations of rainfall and runoff from small drainage basins by analyzing the data of Homer's sprinkler experiments. Thereafter, researchers basing upon his theories and methods analyzed the relations between rainfall and runoff by sprinkler experiments or data from natural areas. On account of the fact that Horton's analysis does not begin with an accurate hydrodynamical viewpoint, problems are bound to arise in practice due to defects in the underlying theories. Shortcomings of Homer's analysis on the basis of the author's theories are pointed out and the practical value of sprinkler experiments estimated. A method proposed by E. V. Bodakoff for computing discharges due to storms on small basins has raised wide discussions among the Soviet scholars, many of whom hold different views. The author hereby points out the main shortcomings of Bodakoff's method, and gives a numerical example with results compared with those computed by the author's method, thus showing the limitations of Bodakoff's method in practical applications.

半世紀來,水文学在發展的过程中已進入了定量分析的途徑;工程師們曾用各种經驗性的方法依據降水的资料推演河槽裹水流的現象,以应各种工程建設对於水文分析的要求。但是对於降水集流的过程始終祇有一些零星、片面的数值分析,没有一套完整的理論系統,因此阻碍着水文学在理論与应用方面的發展。作者曾用流体力学的分析法初步建立了降水集流的理論系統,把降水集流的过程分為三個階段:雨降地面逕流的產生、地面流、槽流之滙集,分别予以分析。本文便是其中第一階段,亦即最基本水文現象的分析。这些建立了的理論可以用為指導各种水文分析的南針,用為評論各种水文計算法的依據,並可用以創造一种近似而合理的方法,从降水資料推算逕流資料。本文中作者貢献一套理論,以分析地面點上降雨產生逕流的过程,揭發了基本水文現象的本質,最後並列舉实例的計算。早年郝登(R.E.Horton)曾依據郝納(W.W.Homer)的地面流实驗資料建立了一套在小地域內降水和逕流關係之理論,其後学者們根據他的理論和方法,用人工降雨法或流域資料实測法來確定降水和逕流間的關係。郝登的分析並没有从準確的動力学观點出發。在实際分析中發生了欠缺理論基礎的根本問題。这方面作者持着不同的意見。本文中根...

半世紀來,水文学在發展的过程中已進入了定量分析的途徑;工程師們曾用各种經驗性的方法依據降水的资料推演河槽裹水流的現象,以应各种工程建設对於水文分析的要求。但是对於降水集流的过程始終祇有一些零星、片面的数值分析,没有一套完整的理論系統,因此阻碍着水文学在理論与应用方面的發展。作者曾用流体力学的分析法初步建立了降水集流的理論系統,把降水集流的过程分為三個階段:雨降地面逕流的產生、地面流、槽流之滙集,分别予以分析。本文便是其中第一階段,亦即最基本水文現象的分析。这些建立了的理論可以用為指導各种水文分析的南針,用為評論各种水文計算法的依據,並可用以創造一种近似而合理的方法,从降水資料推算逕流資料。本文中作者貢献一套理論,以分析地面點上降雨產生逕流的过程,揭發了基本水文現象的本質,最後並列舉实例的計算。早年郝登(R.E.Horton)曾依據郝納(W.W.Homer)的地面流实驗資料建立了一套在小地域內降水和逕流關係之理論,其後学者們根據他的理論和方法,用人工降雨法或流域資料实測法來確定降水和逕流間的關係。郝登的分析並没有从準確的動力学观點出發。在实際分析中發生了欠缺理論基礎的根本問題。这方面作者持着不同的意見。本文中根據作者的理論指出了郝登分析法的癥結所在,並估計了人工降雨实驗法的实用價值之限度。波達闊夫曾建議暴雨逕流之一种計算法,引起了苏联学者的廣泛討論,很多人持有不同的意見。作者於文中指出了波氏等方法發生問題的症結所在;並用实例計算和作者的方法比較,說明了波氏法在实用中的準確限度。

This paper consists of four parts as follows: 1. the flood routing of outflow for basin, 2. the genetic unit-hydrograph, 3. the relation between the three assumptions on unithydrograph and the genetic unit-hydrograph and 4. the calculation of unit-hydrodraph for basin which Iacks data. In this paper the study of the genetic unit-hydrograph is based upon the genetic formulat of runoff founded by M. A. velikanoff and with the help of Muskingum channel storage equation. The calculation of unit-hydrographs...

This paper consists of four parts as follows: 1. the flood routing of outflow for basin, 2. the genetic unit-hydrograph, 3. the relation between the three assumptions on unithydrograph and the genetic unit-hydrograph and 4. the calculation of unit-hydrodraph for basin which Iacks data. In this paper the study of the genetic unit-hydrograph is based upon the genetic formulat of runoff founded by M. A. velikanoff and with the help of Muskingum channel storage equation. The calculation of unit-hydrographs by this method only needs three parameters and it is possible to find out the unit-hydrograph without records of hydrometrie observation of river discharge.

本文包括如下四个方面的问题:(一) 流域出流洪水演算,(二) 流域成因单位线,(三) 成因单位线与单位线基本假定的关系,(四) 无资料地区单位綫的推求。四个问题结成一体,以成因单位线为核心。文中成因单位綫公式的推导系以維虽康诺夫的逕流成因公式为基礎,并借用了馬斯京貢(Mnskingum)槽蓄曲线方程式。使用上述公式計算单位线时只需要三个参数,可无需实测流量記录。上述公式又可用來推求无资料地区的单位綫。

This article proposes a method of variable isochrone for flood computation. It combines the advantages of unithydrograph method and isochrone. It can be used to consider both the nonlinearity and distribution of runoff. It has been applied to the mountainous river for many years, and achieved good results.Combining the variable isochrone for flood computation with the routing flow model of displacement and lag,the functions of the river storage have been further improved. This model can be applied not...

This article proposes a method of variable isochrone for flood computation. It combines the advantages of unithydrograph method and isochrone. It can be used to consider both the nonlinearity and distribution of runoff. It has been applied to the mountainous river for many years, and achieved good results.Combining the variable isochrone for flood computation with the routing flow model of displacement and lag,the functions of the river storage have been further improved. This model can be applied not only to mountainous rivers but to rivers of other region, and thus the practical results can be improved.

本文提出了变动等流时线法,它集中了单位线与等流时线两类方法的主要优点,同时考虑雨洪汇流的非线性问题和空间分布问题.此法多年来在山区河流应用,效果良好. 变动等流时线与移滞河道汇流模型有机地结合,显著改进了变动等流时线法的河网调蓄作用,扩大了应用范围,提高了实用效果.

 
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