查询词典 drought

The climate change led to an increase in drought events, in particular in midsummer in 1990s. The frequency of the rainstorm process decreased from 1980s, and significantly in 1990. From early 1980s, the first frost date advanced, but the late frost date was slightly late by 1.3 days each 10 years. The active accumulated temperature of ≥10℃ steadily increased. The frostless season had gradually extended since 1970s.

进一步分析发现：气候变化导致盛夏农业干旱事件发生的频次增多，90年代几乎每年盛夏出现干旱事件；暴雨过程次数从80年代起逐渐减少，90年代减少明显；80年代初开始终霜冻日期提前，初霜冻日期推迟；70年代起无霜期逐渐延长；稳定≥10℃的活动积温随年代增加。

But lets just hope we keep making the ball and don't geet that drought we usually get ourselve into.

让我们希望火箭能够继续投中那些球，不要让我们陷入我们常常陷入的得分荒中去。

Lipid peroxidation and activity of cell defense enzymes in leaves of oneyearold Gleditsia sinensis seedlings were studied under drought and salt stress.

以1 a生皂角实生苗为材料，采用盆栽方法研究了干旱和盐分交叉胁迫对其膜质过氧化和保护酶活性的影响。

Despite selling teenage striker Gonzalo Higuain to Real Madrid, many believe River are well-placed to end their title drought.

在阿根廷这样一个一年生产两个联赛冠军的国家，对于河床这样的豪门，他们的等待已经永恒到海枯石烂。

In this experiment, we found the water of wheat leaves increase 0.6%~3.06 % for wet weigh and 17%~99.73 % for dry weigh,The oppositely containing the water increase 0.24%~3.42 %, The water saturation decrease 0.24%~3.39 %.The resulte of the leaves of corn is similar with wheat. it indicates that treat with extracts of peganum harmala could enhance the drought resist ability of wheat and corn.

试验结果表明，凡种子经过处理后，小麦叶片水分占鲜重的量增加了0.6%~3.06 %，占干重的量增加了17%~99.73 %，相对含水量增加了0.24%~3.42 %，而水分饱和度降低了0.24%~3.39 %；玉米处理结果与其一致，表明浸种处理具有增强作物抗旱性的生理效应。

Some important protective enzymes and substances of Hedysarum mongolicum Turcz. seedlings related to antioxidation defence system were studied at the different degrees drought srtess.

研究了不同程度干旱胁迫下杨柴苗抗氧化防御系统的多种重要保护酶及物质的变化。

Huangzaosi inbred lines(Huangzaosi and its derived lines) is recognized as one of five heterotic groups by maize breeding in China. It has characters of high combining ability, ideal plant type, drought and barrent tolerance, wide adaptation and so on.

黄早四种群自交系是我国玉米育种的五大骨干杂种优势类群之一，建立在黄早四及其改良的衍生系基础之上，具有配合力高、株型好、耐旱耐瘠、适应性广等特点。

The most serious desertification occurred in southeast of MuSu Desert,then appeared inferior degree in midst,north,south and east,anddegression degree in other directions.6.The changes of environment in Mu Su Desert in historical times havebeen controlled by climatic changes in temperature and drought-wetwithin hundreds or thousands years.At present,it came into being suchspatial structure and environmental characteristics fordesertification land because of being relative to other naturalgeographic characters and human activities.In all that,physiognomyand hiemal wind are the driving factors.The sandy matter in stratumis the physical fountain factor.The depravation of surface water inthis region is one of representations of environmental changes, meanwhile,it is also the factor which leads to the degradation ofvegetation and desertification.On the whole,human activity has actedupon these natural elements,becoming a dominant factor in the regionalenvironment changes since Ming and Qing dynasty.7.Influencing of human activities on the environment of Mu Su Deserthad occurred before Qin dynasty,and its intensity of earlier influencewas so slight that it could not cause a large scope and long timeenvironmental changes.

沙漠化的程度是东南部最强，中北部、南部和东部次之，而后向其他方向递减。6、毛乌素沙地历史时期的环境变化是受百年乃至千年尺度的气候冷暖、干湿变化控制的，之所以形成目前这样的沙漠化土地空间分布格局和环境特征，则与其地的自然地理特征和人类活动有密切关系，其中地貌及冬季风是动力因素；地层中的沙物质是物源因素；地表水环境恶化是区域环境变化的表现之一，同时又是植被退化和沙漠化的引致因素；人类活动总体上是叠加在自然因素之上的，只是明清以来在局地环境变化中成为主导因素。7、毛乌素沙地人类活动的环境影响在先秦时期就已出现，早期的影响程度是轻微的，不足以造成大范围、长时段的环境变化。

With the IAP Prediction System of Short-term Climate Anomaly, two sets of seasonal and extra-seasonal ensemble hindcasts have been performed during the period of 1980～1994 in order to assess the prediction skill of the IAP PSSCA with two different schemes The difference of the two schemes is in the different version of AGCM used, with the IAP AGCM 1 1 in one scheme and the IAP AGCM 1 2 with an improved surface albedo parameterization in the other Comparisons of the hindcast results with the observations show that IAP PSSCA is capable of predicting the precipitation anomaly to some extent In the eastern China largely affected by Asian monsoon and SST anomalies, the prediction skill is relatively high, especially in the Southeastern China where the anomaly correlation coefficient can reach as high as 0 50 in the severe flood and drought years This may suggest that the possible mechanisms for these severe disasters have been well captured by the IAP PSSCA The prediction skill is higher for the modified model AGCM 1 2 as the model's climatological state is well simulated This indicates that models with reasonable land process will improve the prediction skill for short-term climate prediction

利用中国科学院大气物理研究所研制的短期气候距平数值预测系统，种版本的大气环流模式：AGCM 1.1和AGCM 1.2，分别以2月11～19日的9天大气观测值为初始场，以给定海温为边界场，对1980～1994年的15年的降水异常进行了两组集合后报试验。对试验结果进行定量评估表明：IAP PSSCA对降水异常具有一定的预测能力，特别是在中国东部受东亚季风及海温异常影响的地区，IAP PSSCA具有较高的预报技巧，其中以东南区域(包括江淮流域和华南地区)最高，尤其是对有洪涝灾害的降水异常年，距平相关系数在0.50左右，接近可供业务使用的要求，说明模式能够抓住在东亚季风区存在的某种物理机制，从而提高了这一地区的预报技巧；另外，两个大气环流模式相比，改进了地表反照率的AGCM 1.2的15年集合平均预测技巧略高于AGCM 1.1，特别是在华北地区，预测效果有明显提高，这表明改进地表反照率从而改进了模式的气候平均态的模拟，能提高气候模式的预测能力，说明较好的陆面过程引入模式对短期气候预测是有益的。

Tragedy often occurs when governments come along in hobnailed boots and trample over these informal systems, as happened in the Sahel during a dreadful drought in the 1970s.

上上下下。悲剧常常发生在政府开始镇压这些非正式的系统的时候，比如1970年代撒赫勒严重的旱灾。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐