水力学

This thesis combined the riverbed section and plane form, from the two side of hydraulic computation and model test, put forward the method to realized the automatic computation for river closure gap hydraulic parameters and comparison and verification. And through carrying on the secondary development to AutoCAD, realized the common software of automation drawing the topographical section of model test. Based on hydraulics computation technology, finished developing the common application software for one berm-dam vertical closure hydraulic computation.

本文结合河床断面与平面形状，从水力计算与模型试验两个角度出发，提出了实现龙口水力参数计算自动化并进行验证比较的方法；并且通过对AutoCAD进行二次开发，实现了模型试验地形断面绘制自动化的通用软件；同时以水力学计算方法为基础，完成了隧洞导流条件下单戗堤立堵截流水力计算通用应用软件的开发。

The designed banquette position,the river closure discharge and pre-embankment length of the Nuozhadu Hydropower Station are tested by the hydraulic model test.

通过水力学模型试验，验证了糯扎渡水电站设计的戗堤位置布置，研究确定了截流流量、预进占长度，并对在截流流量1 220 m3/s下，戗堤进占各区段的龙口水力特性和抛投材料的使用情况进行了分析，为截流施工方案的决策和施工组织的实施提供了依据

Abstract; According to current engineering hydrodynamics, there's positively constant head lossin Bernoulli's theorem for identical stream line in viscous fluid, which can later turn into heat anddissipate.

现行工程流体力学与水力学理论通常认为粘性流体元流伯努利方程中的水头损失项是但正的，并且这部分损失的机械能转变为热而耗散掉了。

In 1795 Joseph Bramah was granted the patent rights to for the first operational water hydraulic press, effectively beginning the age of modern applied hydraulics.

在 1795 约瑟 Bramah 中为第一的操作水被允许专利权到新闻媒体，有效地开始现代人的年龄应用的水力学。

This article introduces the microporous three-dimensional small-opening structure sintered by powder material, discusses the hydraulics characteristic of the narrow passage in the microporous material and the bubble chamber theory and expounds the general 1/3～1/7 empiric rule.

介绍了由粉末状材料烧结而成的微孔管三维孔隙结构，研究了PE烧结管三维孔隙之间的关系，并探讨了微孔管介质内细孔道的水力学特性和泡室理论，对通用的1／3～1／7经验规则进行了解释。

This text studies traditional folk house from the point of view of technology, including climatologic, architectural physics, hydraulics and wind pressure theory.

本文运用气候学、建筑物理、水力学和风压理论，从技术角度对传统民居进行了研究。

A numerical calculation program is written up for the various solution methods in this paper and the program is being used in various aspects of inverse problem of environmental hydraulics, including inverse problem in reverse process of one-dimensional unstable diffusion, inverse problem in reverse process of convection-diffusion, inverse problem for the dispersion coefficient in water quality model, The inverse problem of coefficient identification for nonlinear Boussinesq equation, parameter identification inverse problem for water quality model, the inversion of parameter of BOD-DO water model, the inverse problem of the source of convection-diffusion, identification of the steady-state permeability for two dimensional isotropic medium, two-dimensional steady inverse problem of convection-diffusion and parameter identification inverse problem for two-dimensional parabolic equation, etc.

对本文提出的各种算法，编制了数值计算程序，并把它应用于环境水力学反问题诸多领域，包括污染物一维非恒定扩散逆过程反问题，对流扩散方程逆过程反问题，河流水质纵向弥散系数反问题，非线性Boussinesq方程反问题，河流水质多参数识别反问题，BOD-DO水质模型参数反演问题，对流—扩散方程源项反问题及二维恒定各向同性介质渗透系数反问题，二维定常对流——扩散方程及二维抛物型方程参数控制反问题等。

In this paper,hydraulics principle and empirical formula are used in hydraulic calculation of flow in different forms of side ditches and water drainage capability of open water outlet in continuous gradient and concave vertical curve bottom.

利用水力学原理和经验公式，对不同形式的边沟流量和开口式排水口在连续坡度上及凹形竖曲线底部的排水能力进行了水力计算，并采用修正法计算了不同形式的边沟水流量。

In the first part, the different methodologies are compared, the origination, development and application which cut cross the science of the concept of entropy are stated and summarized. These cut lay the foundation for the application of entropy theory to water environment.

第一部分分析比较了水力学研究的不同途径；概括阐述与总结了熵概念的产生、发展及其在交叉学科中的应用，为本学科领域移植与应用熵理论奠定了基础。

The experimental study on energy dissipation for Yuanmanguan Power Station was carried out by the hydraulic model test, put forward a new energy dissipator style and its designing method on five crest spillway flood for arch dam.

利用水工水力学模型试验研究方法对圆满贯工程泄洪消能问题进行研究分析同时，为百米级拱坝在五表孔布置方面，提供了一种全新的泄洪消能工体型与设计思路，即采用宽尾墩窄缝纵向水舌与连续鼻坎横向扩散的布置形式，可以使水舌在纵向与横向实现全范围的扩散，消能率提高，适应不同运行方式需要的同时，缩短了RCC拱坝施工工期，节约了工程总投资。

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。