引水渠

菹草（Potamogetoncrispus）的生态习性和在京密引水渠的发生规律研究

Study on Ecological Habits of Potamogeton crispus and Its Growth in Jing Mi Cannal , Beijing

1913年的时候，洛杉矶水务部门的总工程师威廉·马尔霍兰（WilliamMulholland）用一句传世的宣言开启了洛杉矶引水渠的闸门：“水就在那里，尽管取而用之。”此番话语，尽显傲慢。

It was hubris , born in the words of the city 's chief water engineer , William Mulholland , when he opened the gates of the Los Angeles Aqueduct in 1913 with an immortal proclamation : " There it is . Take it . "

洛杉矶引水渠的建设，耗时5年，5000劳力

The Los Angeles Aqueduct . 5 years , 5000 men .

末日意识悬板分层式引水渠首输沙特性研究

Study on the Sediment Transport of the Hanged plate Two Storied Intake

引水渠已经完工非常不错

The aqueduct is completed , and it is good .

引水渠淤积成因与防治

Discussion on origin and prevention and cure of silting in water diversion ditch

当地的农民曾试图炸毁引水渠不下10次

Local farmers attempt to blow the aqueduct up , over 10 times .

但是如果没有罗马引水渠的发明，一切与水有关的创新设施都将无法实现。

None of these aquatic innovations would have been possible without the Roman aqueduct .

许多古罗马时代的引水渠至今还保留在地中海附近。

Many aqueducts from ancient Roman times still stand today near the Mediterranean Sea .

他修建的长达200英里的洛杉矶引水渠使得这座城市从荒芜之地崛起

his 200 mile L.A Aqueduct allows the city to grow from the desparate .

洛杉矶引水渠是美国历史上最具野心的工程之一

The Los Angeles Aqueduct remains one of America 's most ambitious engineering efforts .

京密引水渠常见沉水植物的生态位和群落演替

Study on Niche and Community Succession of Submerged Macrophyte in Jing Mi Canal , Beijing

本设计考虑了上游引水渠和下游冲沙廊道布置对漏斗水流整体的影响。

The design considers the integral effect of the upstream headwater channel and downstream scout gallery .

那是在引水渠旁边的。

That 's the elevated rail .

引水渠拯救了洛杉矶

The aqueduct saves Los Angeles .

他们设想，从邻近的海洋中取海水进行谈化然后使用引水渠和水泵引入内地。

They envision desalinating seawater from the neighboring oceans and bringing it inland using aqueducts and pumps .

他们建造了许多桥梁和引水渠，而且其中有一些至今仍被使用。

They built a lot of bridge and the diversion channel , but some of them still use .

汤河水库输水洞进口引水渠淤积情况分析1855～1995年黄河下游山东河段河道冲淤厚度浅析

Analysis of Sedimentation and Scouring Depthes in Shandong Reaches of the Lower Yellow River from 1855 to 1995

并对引水渠开启时机，持续时间及开启度进行了初步探讨。

The issue also discusses the open occasion 、 duration and open degree of the gate . absorbing time duration ;

人形弯道环流是解决引水渠首泥沙入渠的有效途径

Efficient way to solve the problem of sediment in the intake headworks by using the symmetry circulation with the reverse Y-shape

引水渠解决了罗马城的用水问题，对城市公共健康和卫生设施的发展也发挥了极其重要的作用。

Aqueducts liberated Roman cities from a reliance on nearby water supplies and proved priceless in promoting public health and sanitation .

引水渠位于左岸，是导流、泄洪、发电、灌溉四结合的建筑物。

Situated on the left bank , the headrace channel is a structure for diversion , flood disposal , power generation and irrigation .

为了保证京密引水渠正常运行，防护林的更新改造是关键问题。本次试验重点放在坡面地锦的促生长研究。

In order to guarantee the normal running of Jingmi diversion canal , it is a key problem that shelter forest is renovated .

通过正态物理模型试验，分析了不同运行方案情况下，引水渠取水口通航水流条件。

From the normal scale physical mode test , navigable flow conditions of inlet of the approach channel is analyzed under various operational plans .

第一条引水渠建造于公元前312年，在重力作用下，以石管、铅管和陶管作为输水管道把水引入城区。

First developed around 312 B.C. , these engineering marvels used gravity to transport water along stone , lead and concrete pipelines and into city centers .

本研究利用边界元法求解了悬板分层式引水渠首的悬板区过流问题。

Boundary element method to calculate the free surface flow over the plate region of the hanged-plate two storied intake work is presented in this paper .

本文试验研究了宽浅明渠横向取水时的分流特性及泥沙在引水渠中的淤积。

Water diverted transversely from wide-shallow open channel results in that eddy flow occur in diversion channel , and sediment entering into the channel deposits heavily .

工程总体由首部枢纽、引水渠、前池、压力钢管、主副厂房、尾水渠等建筑物组成，采用建坝和新开一段明渠的引水方式。

The engineering is made up with head hinge , diversion canal , fore bay , steel penstock , lord factory building , and the tail channel .

京密引水渠的水工混凝土建筑物老化病害现象日趋严重，威胁工程的安全运行。

The aging and defects of the hydraulic structures on Jing-Mi water diversion canal become more and more serious , endangering the safe operation of the canal .

从河流中引蓄洪水实现洪水资源化，引水渠首内外水位差是引蓄洪水水量的关键之一。

Channeling flood water from rivers to realize flood resource utilization , the water head of inside and outside of channel head is one of keys to flood quantity .