Drought periods是什么意思

网络释义

用法例句

Analysis on the applicability of water-supply risk indexes for water resources system during drought period;

干旱期水资源系统供水风险指标适用性分析

Several major indexes are described, which are often employed for expressing reservoir operation performance in drought period, and necessity of researches on water-supply projects operation and regulation in drought are stressed.

阐述了干旱期供水工程运行调度研究的必要性以及目前水资源研究领域普遍使用的表达干旱期供水水库运行性能的一些主要指标 ;对普遍使用的求解运行策略的限制供水规则模型和混合整数规划模型进行了恰当描述 ;最后介绍了混合整数规划模型的一应用实例 ,说明研究方法的可行

In this paper, risk theory has been used in the management of water resources during drought period, and the corresponding indexes such as risk, reliability, resiliency and vulnerability have been given.

把风险分析方法用于干旱期的水资源管理，给出了相应的风险、可靠性、恢复性和易损性等具体的风险指标。

Multi-objective planning method for reservoir water-supply risk analysis during drought periods;

干旱期水库供水风险分析的多目标规划方法

Effects of nitrogen on the dry matter weight,nitrogen accumulation and distribution,yield and fiber quality of cotton under short-term drought and after re-watering during flowering and boll-forming stage were studied.

通过盆栽试验进行水分(正常灌水和干旱后复水)和施氮处理(0、240、480kgN·hm-2),研究花铃期短期干旱再复水后氮素对棉花各器官干物质重、氮素累积与分配及产量与品质的影响。

The dry spell blighted the crops.

干旱期使农作物枯萎了。

We must conserve water during the drought.

干旱期间我们必须节约用水。

A plant adapted to climatic conditions in which periods of heavy rainfall alternate with periods of drought.

湿旱生植物适应大量降雨期和干旱期交替性气候的植物

The lake ran dry during the drought.

干旱时期湖水干涸。

fresh vegetables were scarce during the drought.

干旱时期新鲜蔬菜缺乏。

Rationing water during the drought.

在干旱时期定量供应水

Long dry periods wasted the land.

长期干旱使土地荒芜了。

. The river ran dry during the drought.

大旱期间河流干涸　?

Laws of Climate Change in Arid and Semiarid Zones of China since Last Glacial Period;

中国干旱、半干旱区末次冰期以来气候变化规律

The long draught dried up the small stream.

长期的干旱使那条小河干涸了。

The long drought dried up all the wells.

长期的干旱使所有的井都干涸了。

it is very dry this year, and the low-water mark of the Yellow River drops.

今年气候干旱, 黄河的枯水期提前了!

land wasted by long dry periods.

由于长期干旱而荒芜的土地

It is a great relief to have rain after a long time of drought.

长期的干旱之后有雨是一大慰藉。

A Study on Defense Mechanism of Maize Seedlings to Drought Stress Mediated by microRNA

玉米苗期microRNA介导的干旱防御机制研究

Study on drought disasters in Yulin area in Han Dynasty

两汉时期榆林地区干旱灾害初步研究

Effects of Winter Drought on Growth and Development of Wheat Seedlings

冬季干旱对小麦苗期生长发育的影响

The plants are as dry as tinder after this long drought.

植物经过长期干旱之后干枯得如同火绒一般。