查询词典 runoff

The joint and conditional frequency of rainfall with different runoffs and runoff with different rainfalls were figured out with this model .

它可以给出不同程度暴雨和径流遭遇组合的频率，也可以在一定的降雨量条件下给出不同径流量的发生频率，或一定的径流量条件下给出不同降雨量的发生频率。

And the variation of runoff and sediment diverted from these outfalls reflects the variation of the water-sediment in the Yangtze River and Dongting Lake. Based on the field data, the laws and causes of the water-sediment transport are studied in this paper.

本文通过实测资料分析了近年来荆江与洞庭湖水沙输移变化规律及其变化原因；采用一维河网数学模型定量给出各因素对三口分流变化的影响。

In this paper, based on the water balance equation, infiltration parameters from advance and runoff model method was used to estimate the soil permeation parameters of Kostiakov-Lewis equation in furrow irrigation, according to a set of field furrow irrigation data to estimate the parameters, and utilizing WinSRFR1.1 software to simulate the water flow in furrow irrigation.

该文以水量平衡方程为基础，采用IPARM方法建立了沟灌Kostiakov-Lewis入渗方程中参数的估算方法，并根据一组田间实测沟灌资料对入渗参数进行了估算，利用WinSRFR1.1软件对沟灌水流运动进行了模拟。

The results showed that ridge and furrow cultivation changed micro-topography of farmland and increased soil water content of furrow by collecting the runoff generated from ridge, in favor of downward movement of soil water.

结果表明：垄沟耕作改变了农田微地形，利用垄上降雨顺垄流人沟中，从而拦蓄部分径流，相对增加了沟中土壤蓄水，有利于水分向下运移。

Both use the runoff rule for district elections.

同时使用径流规则地区的选举。

In order to demonstrate the rationality of 11 years period of long series natural yearly runoff, the period of sunspot from 1756 to 2000 is analyzed.

为了论证长系列天然年径流量存在11年周期的合理性，对1756～2000年的太阳黑子数的周期成分进行了分析。

The main contents are as follows:Firstly, starting with the general situation of soil erosion and the harms caused by it, the causes leading to the local soil erosion problem are analyzed comprehensively in the paper. And connecting with the measures taking place, sticking points towards the career of soil and water conservation are expatiated upon.Secondly, Back-Propagation Neural Network, One of Artificial Neural Network is used to set up a modal about the connection of the soil erosion modulus and seven factors impacts on it, such as, rainfall, rainfall largest intensity in 30 minutes, runoff coefficient, vegetation cover percent, rate of granule, rate of physical viscidity-clay, the rate of organic matter. Through the comparison with linear regression model, the second regression model, the Chinese Soil Loss Equation, it illustrated that BP Neural Network modal is more accurate than the other three modals in forecasting the mount of soil erosion, and the BP Neural Network will have some applicability in forecasting in soil erosion.

本文以霍山县作为皖西大别山区的典型区域，主要研究了以下内容：(1)从介绍霍山县土壤侵蚀状况以及所造成的危害入手，全面分析了导致当地土壤侵蚀发生的原因，并结合当地采取的水土保持相关措施，阐述了当地水土保持工作的症结所在；(2)结合上土市水土保持试验站多年实测资料和2005年实验资料，应用BP神经网络理论，建立了次降雨土壤侵蚀量与次降雨量、最大30min雨强、径流系数、植被覆盖度等因子之间关系的模型，并通过BP神经网络的预测模型与一次回归模型、二次回归模型、CSLE模型之间的对比分析，说明了建立的BP神经网络模型在土壤侵蚀预测可以取得较回归模型和CSLE模型更高的精度，也说明了BP神经网络理论在土壤侵蚀预报中具有一定的适用性。

The time from May to September is the active time of hydrological process, which occupies 85% of annual runoff; the spring flood and summer flood are founded in hydrological process, the peak of summer flood is larger than spring flood.

结果表明5-9月为研究流域的水文过程活跃期，该时段内的径流量占全年总径流量的85%；径流过程中存在春汛和夏汛，夏汛洪峰值明显高于春汛。

Yangtze River glacier retreat has little to do with human factors Shangguan Dong-hui said that the short term, the glacier melt water to the Yangtze River has brought plenty of water, the surface, in the Northwest seems to be a good thing, but this supply led to the uneven seasonal river runoff in winter The early release of melt water, resulting in spring flood summer drought.

长江源冰川的退缩与人为因素关系不大上官冬辉说，短期内，冰川的融水给长江带来了充沛的水量，表面上看，对西北地区似乎是一件好事，但是，这种补给导致江河的径流量季节性不均，冬季的融水提前释放，从而造成春汛夏旱。

Particular landform of Tacheng Region allows water vapor from the west, so as to form many medium-and small-sized rivers. The seasonal snow covers the hills. During the snow-melting season in spring, the rivers have the character of spring flood, which makes uneven distribution of annual runoff and results in a disadvantaged allocation of water resources.

塔城地区独特的地形为西来水汽的输送提供了条件，从而形成了众多中小河流，而中低山带季节性积雪的消融又使河流呈现出春汛的特点，使得径流年内分配不均，对塔城地区水资源配置极为不利，开展径流量的预测研究，将为水资源的优化配置提供科学的理论基础。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。