查询词典 waterhead

In this paper,thetype of flow in perforated pipe was analysed,and the influence of which on calculating waterhead losses was simulated by computer programme.

大量计算表明，灌溉中使用的小流量多孔管的首端流态一般是紊流光滑区和紊流过渡区，而在末端或多或少出现一定长度的层流段。

Nowadays is an era of economization and information, more and more people would like to live in the place nearby waterhead and beautiful landscape. Zoology of this place is fragile, and easily invaded by disaster. When anti-disaster investment is implemented at this place, disaster fatalness is degraded, environmental quality is improved, more and more people move to this place, more and more enterprise invest over there, what all this will help to raise land-value and promote area flourish. This is the indirect effect caused by anti-disaster investment.

在当今经济化和信息化的时代，人们更希望居住在靠近水源、山川秀丽的地方，而这此地方往往生态脆弱、易受灾害侵袭，对这些地区进行防灾投资，可以使该地区受灾的危险性降低，环境质量得到改善，从而促使更多的家庭来本地落户、更多的企业来本地投资，促进了地价的上扬和地区的繁荣，这是防灾投资的间接效果。

Aimed at resolving the pollution of waterhead area in Shanghai currently, the causes for pollution were analysed separately, and then the measures of protection and security were proposed from the side of management, execute and technology.

该文针对上海市水源地水污染的现状，对污染成因逐一分析，并从管理层面、执行层面以及技术层面提出了几点安全与保护对策。

To explore the principles and techniques of ecological rehabilitation of the rivers,the ecological engineering principle and technology were used to study the rehabilitation methods of damaged riverside plant communities in subtropical waterhead of Tian-xia River.

为探索河流生态修复的理论和技术，该文采用生态工程原理与技术研究了亚热带城市水源地受损河岸植物群落的修复方法，以植物种类组成、盖度、生物多样性为指标对修复效果进行了验证。

To explore the principles and techniques of ecological rehabilitation of the engineering principle and technology were used to study the rehabilitation methods of communities in subtropical waterhead of Tian-xia rivers, the ecological damaged riverside plant River.

为探索河流生态修复的理论和技术，该文采用生态工程原理与技术研究了亚热带城市水源地受损河岸植物群落的修复方法，以植物种类组成、盖度、生物多样性为指标对修复效果进行了验证。

On the basis of model test, a 3 D numerical simulation on the flow field of low waterhead and big discharge riverbed hydroelectric station was made by adopting k-ε turbulence model and VOF method.

在1∶100水工模型试验的基础上，应用k-ε流数值模型，采用VOF方法，对低水头大流量河床式电站大坝泄洪流场进行了三维数值模拟。

The whole ecological benefit shows downtrend, especially the area of nutrient waterhead and water and soil benefit in forest get large, and on the contrary the forest area lessens.

整体森林生态效益价值呈下降趋势，特别是森林的涵养水源和保持水土效益价值在森林面积增加的情况下反而下降。

Shanxi Reservior is the largest water conservancy project in wenzhou history, and is the most important waterhead field in Wenzhou. However, the water quality of Shanxi Reservior is unable to satisfy the standard for ground water environmental quality in functional district.

珊溪水库是温州市历史上最大的水利工程项目，已成为温州的重要水源，但是，珊溪水库水质不能保证达到地表水环境保护功能区的要求。

But it became seriously alimentaled because of the waterhead polluted,discharge of toilet, the rotteness of fallen branches and leaves.

改革开放以后，随着经济的发展，周边农田上建立了许多厂房和民居，废水、废物、废气等污染物不断增加。

Under this circumstance, the analysis is made on the features of two terroristic attack forms on the reservoirs: the destruction of the structures for the water projects and the attack on the waterhead with paroxysmal water pollution, while a frame of the concept of a monitoring and emergency system against terrorism for the large.

在分析水库建筑物安全物理破坏和突发性水质污染破坏特点的同时，从库区—流域角度提出构建大型水源水库防恐监测及应急系统框架的思想，并且探讨了具体实施方法和内容，为流域性防恐安全体系的实现进行了理论性探讨

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。