查询词典 flood current

Basing on that, the paper discusses how to set up a proper and well-tailored flood management mode in order to provide reference and theory support for the improvement of flood management system in China.

在此基础上，探讨了适应我国新时期发展的、具有中国特色的洪水风险管理模式，旨在对完善我国防洪体系建设提供参考和理论支持。

Trestle bridge and at the end of the beam must be higher than the design flood and flood control and navigation in accordance with the requirements of certain ultra-left.

桥梁和栈桥的梁底必须高于设计洪水位，并按照防洪和航运的要求，留有一定的超高。

Frost-free period of about 230 days year, the average rainfall in about 1200 mm, but in 2001 60% of the rainfall in the May-September flood season, a spring flood season, the rainy season, three Autumn Rainfall of rain.

全年无霜期约 230 天，年平均降雨量在 1200 毫米左右，但一年中 60 ％的雨量集中在 5 至 9 月的汛期，汛期有春雨、梅雨、秋雨三个雨期。

In winter, snow accumulates and melts fast in spring. Snowmelt flood and a summer flood display a double peak pattern of discharge route. In order to simulate the precipitation-runoff features in semi-arid regions, an Atmosphere-Vegetation Interaction model with detailed energy and water transfer processes between atmosphere, vegetation and soil was used.

由于这些特点，在地表水量平衡的计算和模拟中，蒸发的估算十分重要，为此在植被-大气相互作用模式中对水文过程作了改进，模式中包含了大气-植被-土壤间的能量和水分传输过程，特别是半干旱区地表蒸发和植被的蒸腾过程作了比较细致的处理，考虑了蓄满和超渗两种产流机制，同时采用了一个简化的雪盖模型。

Furthermore, the impact factor on runoff showed that, each stage has different impact factors, soil temperature and soil moisture above 65 cm plays a leading role in spring flood; in summer dry season, relation of soil temperature and moisture above 40 cm and runoff is negative correlation, the deeper soil temperature and soil moisture plays a leading role; temperature and precipitation plays a leading role in summer flood; in autumn dry season, the impact factors are soil temperature, soil moisture and temperature.

径流影响因子分析的结果表明：径流过程中不同时段具有不同的主导因子，春汛期主要是65cm以上的土壤温度和水分起主导作用；夏季枯水期40cm以上土壤水分与径流是负相关，深层地温和土壤水分起主导作用；夏汛期气温、降水起主导作用；秋季枯水期的影响因子依次为土壤温度、水分及气温。

The tree α-cellulose δ^13C time series from 1835 to 1997 was obtained based on cross-dating tree rings age from the Tianmu Mountain, Zhejiang Province. After removing the long-term decrease trend, which is related to atmospheric CO2 concentration of the δ^13C series, we analyzed the correlation between the δ^13C and the flood/drought index of different periods. The results suggest that both the same year and the next year tree ring δ^13C are distinctly related with the spring and summer drought indices, showing that the δ^13C better responsed to the spring and summer flood/drought.

对采自天目山的柳杉树轮进行交叉定年后，测得树轮的δ^13C年序列，将δ^13C去除大气CO2趋势影响后的高频变化与不同时段的旱涝指数进行相关分析，结果显示：春夏季的旱涝指数与当年和滞后一年的δ^13C序列有着比较显著的相关性，表明树轮δ^13C对春夏季旱涝的发生有着比较好的响应。

This paper conducts the computation classification for the spring flood and drought situation in He Zhou by using the spring precipitation data in four weather stations of He Zhou during 1965-2004,and the z index,and the index of regional flood and drought .

利用贺州市四站1965~2004年春季降水资料，运用z指数和区域旱涝指数对贺州地区春季旱涝情况进行计算分类，并对重旱涝典型年份500hPa环流特征量和4月平均环流场展开分析，发现：贺州地区春季极易发生局部旱涝灾情，90年代以来重旱涝年份出现频率明显增大；在重旱年副高强度强，西伸脊点明显偏西，南支槽偏西偏弱，极涡中心偏东，亚洲中高纬高度偏低，在重涝年则相反。

First, this paper presents the actuality of research field in global city flood control and that of China, and analyses the questions of research field in china city flood control.

本文首先概括总结了国内外城市防洪与供水领域的研究现状，分析了国内城市防洪与供水领域中存在的问题。

Before the flood arrives, the river's flood plain is calm and dry.

在洪水爆发前，泛滥平原平静干旱。

In addition, heavy or catastrophic flood often occurs when southern oscillation has a positive value. Furthermore, if ELNINO also occurs in such a year, the probability of catastrophic flood occurrence may be larger.

另外，特大或大洪涝灾害的发生亦常见于南方涛动为正值的年份，而若此时又出现厄尔尼诺现象，则发生的可能性将更大。

World War II: Battle of Saipan - Americans take Saipan.

1944年的今天，美国在塞班战役中拿下塞班岛。

When the scorner, the rejecter of truth, has become presumptuous; when the routine of work in the various money-making lines is carried on without regard to principle; when the student is eagerly seeking knowledge of everything but his Bible, Christ comes as a thief.{DA 635.3

当讥诮和拒绝真理的人，到了任意妄为时，当追求财利者罔顾按道义经营谋利时，当学人正在兢兢业业地研究各种知识，而单把圣经丢在一边时，基督要像贼一样来临。