查询词典 hydro-electric

In this paper, the reviews of chemical weathering, global carbon cycling and the interrelation among their characteristics as well as the studies on fluvial hydro-chemistry at home and abroad are included.

本文综述了化学风化作用与全球碳循环的研究现状，着重介绍了化学风化作用与碳循环的特征之间的相互作用关系，详细阐明了在二者的影响下国内外河流水化学的研究成果。

The detailed representation of cascade hydro plants, which includes water volume, water inflow, water discharge, forebay elevation, tailrace elevation and effective water head, is studied in the proposed strategy. The uncertainties, such as water inflows, electricity prices and unit status are taken into account as well.

模型全面分析了蓄水量、弃水量、前池水位、放水路水位、发电水头之间的关系，并考虑了电价、入库径流量、机组运行状况等不确定因素对梯级水电站短期优化调度问题的影响。

Companies give full play to the technological advantages of Tsinghua University, the traditional hydro-generator equipment for technical improvements, development, the introduction of efficient runner, has developed a hydraulic automatic adjustment of excitation automatic control, remote monitoring parameters and super output reactive Shuilun automation power generating equipment, power station can increase the overall economic efficiency of over 10%.

公司充分发挥清华大学的技术优势，对传统的水轮发电机设备进行技术改进，研制、引进高效转轮，开发了具有水压自动调整、励磁自动调控、参数远程监控以及超强输出无功功率的自动化水轮发电设备，可整体增加电站经济效率10%以上。

When production can be greater than production, give rise to a series of hydro-geological environment.

当开采量大于可开采量时，会引起一系列的水文地质环境问题。

The four well-known skeleton hydro-power stations of West-East Electricity Transmission Project, named Xiangjiaba, Xiluodu, Baihetan and Wudongde from the lower reaches of Jinshajiang River to upriver reaches, are all distributed in this area. Based on the analysis of the resource exploitation and industry sustainable development status, current problems and future scenarios, the main conclusions go as follows:(1) There are abundant and varied agricultural resources, widely distributed mineral resources with valuable predominant minerals, potential tourism resources, but some main problems such as lower level of exploration and development, serious waste and pollution, restraints of financing and transportation and eco-environmental frangibility still call for immediate solution;(2) Regional economy develops fast but the overall level is low-farming and animal husbandry industries, In which crop-plantation takes the main part, dominates in the sectional structure of economy, and forestry and specialty industries need to be further developed. The existed restraints such as unbalanced structural and regional economic distribution, acute structural deficiency and low economic efficiency need to be cleared out, of the way to a sustainable future.

西电东送骨干工程的向家坝、溪洛渡、白鹤滩、乌东德四大水电站均分布在这一江段通过对该区域资源开发和产业发展的现状、问题和发展前景进行分析，得到如下主要结论：(1)该区域农业资源丰富多样，矿产资源分布广泛且优势矿种地位突出，旅游资源待开发潜力巨大，但是资源开发却面临着勘探开发程度不够、浪费污染严重、资金交通制约和生态环境脆弱等几大问题；(2)区域产业经济发展迅速但总体水平低，部门结构中以种植业为主的农牧业占主导，林牧业和特色产业有待进一步开发，产业发展面临着部类和区域不均衡、结构矛盾突出以及效益低下等问题的困扰。

Takes Downside Door of C70 Gondola Car, Shell of The NSW Type Hand Brake, 12-Inch Hydro-Checks Front Cover and Porthole Cover of Grain Hopper Car and so on as subjects, by studying on general digitial methods of both DYNAFORM and Pro/E, expounds the regular cognizance about various typical forming processes. Consequently, the manufacturing of production will be more foreseeable and scientific.

以C70敞车下侧门、NSW手制动机箱壳、12寸制动缸前盖、粮食漏斗车装货口盖等铁路货车关键件实例为研究对象，通过对DYNAFORM和Pro／E综合数字化技术手段的运用研究，阐述了对各种典型成形过程的规律性认识，使产品实现过程更具有预见性和科学性。

This paper analyze and study the influence of the superimposition in depth based on the previous achievements and combined with the theoretical qualitative analysis and project instances. The main contents as follow:Chapter 1: Indicate the significance and objective of this paper, review the previous achievements of the transient process and superimposition, and then present the study purpose of this paper.Chapter 2: combined with the physic knowledge of the fluctuation and the superimposition, Indicate the physical essences and the influence of the superimposition phenomena that exist in the diversion pipe system, and take one hydraulic turbine owning only one diversion tunnel and two hydraulic turbines sharing one tailrace conduit for instance to study out the numerical calculation superimpose operations.Chapter 3: From the calculation theory of the parameter of the guaranty calculation of regulation of the hydro-turbine, qualitative analyze the influence of the superimposition on them and the superpose time, combined with some project instances, get the numerical value of the influence of the superimposition and the superpose time.Chapter 4: Based on the previous achievements of the calculation and theoretical analysis of the surge-chamber ground swell, analyze the influence of the superimposition on it and the superpose time.

本文在前人研究成果的基础上，结合理论定性分析及工程实例，对波动叠加带来的影响进行深入分析研究，其主要内容如下：第1章，指出本文研究的意义和目的，回顾前人对水电站过渡过程及波动叠加方面的有关研究成果，在此基础上提出本文的研究内容；第2章，结合物理学中有关振动与波动叠加方面的有关知识，阐述水电站引水发电系统中存在的波动现象的实质及其影响，并以两机一洞和一机一洞具有上游调压室或下游调压室的水电站拟定其数值计算叠加工况；第3章，从机组调保参数的理论出发，定性的分析波动叠加对机组调保参数的不利影响及叠加时间，结合几个工程实例，得到波动叠加带来的影响大小及叠加时间；第4章，在前人对调压室涌浪进行计算和理论分析的基础上，分析波动叠加对调压室涌浪的影响及其叠加时间。

This thesis builds "635"hydro-junction project headrace model without cracks and model with cracks in finite element software ANSYS.

本文在有限元软件ANSYS 中，建立"635"水利枢纽工程导流洞无缝状态下的模型和带缝状态下的模型。

It is an economic and energy saving way that the hot wind of hydro generator is used to power plant heating .

发电机放热风用于电厂厂房采暖是一种经济节能的方法。

Hydro generation is capped at 50% of the fund, and wind at 30%.

水电发电的上限是50 ％的基金，和风力为30 ％。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。