查询词典 hydropower

The negative impacts of overdevelopment of hydropower would destroy the river's diverse aquatic life,' the letter said.

公开信说，水电过度开发将会破坏长江水生生物的多样性。

All the human activities of overuse of runoff, overdevelopment of hydropower, inappropriate regulation and control of floods and sediment, overmuch discharge of polluted water to the river and the changes of habitat environment of key species would harm the health of a river.

人类过多抽取河川径流和开发水电、不当地调控洪水和泥沙、过多向河流排污和改变关键物种栖息地环境的活动，均会对河流健康造成伤害。

Apply to oil products, geological, metallurgical, coal, building materials, transportation, water conservancy and hydropower, and other departments and relevant institutions in the development, scientific research, quality supervision, teaching model in the production of all kinds of rocks, minerals, concrete, paleontological specimens.

产品适用于石油、地质、冶金、煤炭、建材、交通、水利水电等部门及有关大专院校，在开发、科研、质量监督、教学示范中制取各种岩石、矿物、混凝土、古生物标本。

Steel Lined Reinforced Concrete Penstock is important new hydropower station structure, and it is widely used for its specific advantages.

钢衬钢筋混凝土压力管道是新近发展起来的水电站重要结构物，其优良的受力性能使其具有广阔的应用前景。

Using this theoretical formula, we estimated the inherent frequency of penstock system in Three Gorges hydropower station.

利用此理论公式，估计了三峡电厂引水系统的实际固有频率，所得结果与实测值比较接近，从理论上证实了水体共振引发异常振动的可能性。

The residual stress in the penstock of hydropower station produced by the welding is one of important factors which cause the brittle fracture of penstock.

水电站引水压力钢管焊接后产生的残余应力，是引起钢管脆性断裂的重要原因之一。

Lushan in the phosphate rock that is rich in resources, coal resources and hydropower resources.

鲁山境内有十分丰富的磷矿资源、煤炭资源和水电资源。

At last ,the piecewise linear interpolation function is applied to deal with complicated constraints conditions for solving the objective function .The simulation results on the three gorges cascaded hydropower system long term optimal dispatch under the flood and dry power price and comparison with other algorithms show that it is greatly efficient to solve engineering optimal problems with complicated constraints.

针对模型中复杂的约束条件，采用分段线性插值函数实现了对目标函数的求解，并通过对丰枯电价下三峡梯级水电系统长期优化调度问题的计算及与其它算法的对比，验证了该算法可运用在解决具有复杂约束条件的工程优化问题中。

In this paper, the analytical expressions of seismic input for homogeneous elastic half-space are first derived in oblique incidence of plane SV-wave, and then a finite element model for a real hydropower cavern group composed of main powerhouse- transformer chamber- tailrace surge tank cavern is created. Characteristics of seismic responses such as displacement, acceleration and stress are studied in detail at different incidence angles and some results are compared with those given by the literature.

本文首先推导了平面SV波斜入射下均质弹性半无限空间的地震动输入表达式，然后建立了某水电站主厂房室-主变室-尾水调压室等构成的地下洞室群有限元模型，详细研究了不同入射角度下各洞室的位移、加速度、动应力等地震反应特点，并与文献进行了对比。

Research on deep anti-sliding stability and reinforcement of entirety polygonal line gravity dam;2. The 2D Elastoplastic Finite Difference Method is adopted to analyze the deep anti-sliding stability for the dam foundation of Longkou hydropower station factory dam.

采用二维有限差分程序对龙口水利枢纽混凝土重力坝厂房坝段进行深层抗滑稳定分析，采用强度折减方法，根据特征点位移突变临界破坏判据和止水帷幕部位夹层错动量达到1mm临界破坏判据分别得出了厂房坝段的两个深层抗滑稳定安全系数。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。