The whole basin water reserves are equivalent to the U.S. for more than 14 total. E salmon-rich river .20 30s the U.S. government began to cascade development of the River and integrated management, in the dry and its tributaries, to build a series of dams and power stations, of which the most famous Grand Coulee dams as high as 168 meters long and 1272 m.

全流域水力蘊(yùn)藏量相當(dāng)于美國(guó)總量的14以上全免费的一级毛片。E河中盛產(chǎn)鮭魚(yú)欧美性爱一区二区三区精品视频。20世紀(jì)30年代美國(guó)政府開(kāi)始對(duì)該河進(jìn)行梯級(jí)開(kāi)發(fā)和綜合治理人人操,人人干,人人摸，在干黄色网页在线免费看。、支流上建立一系列水壩和電站免费激情图片视频，其中91狠狠综合久久久久精品网站，最著名的大古力水壩高達(dá)168米天天插天天拍一拍，長(zhǎng)1272米。

The countercheck of water resources in Guangxi had been completed after three years of hard work in accordance with the national unified plan.

根據(jù)全國(guó)統(tǒng)一部署欧美日韩中文字幕99久，經(jīng)過(guò)3年的辛勤工作男人扒开女人的腿桶到爽视频，廣西水力資源復(fù)查工作已全部完成。

Natural draft cooling tower ; counterflow type ; hydraulic computation of water distribution ; coefficient of resistance

自然通風(fēng)冷卻塔老牛影视无码av一区；逆流式人体尤物性爱视频网站；配水水力計(jì)算；阻力系數(shù)

Results show that P. crispus reduced content of MS, and the longer they stayed with the flow, the greater the effect.

結(jié)果顯示国产乱子精品的A片视频，菹草系統(tǒng)可以降低水體中懸浮泥沙含量国产激情Va在线播一放，并隨水力停留時(shí)間延長(zhǎng)而降低程度加大。

It is very difficult to estimate the effect due to such a reduction of cross-sectional area.

模型的糙度是任選的1024在线视频一区二区精99；其他的水力要素天天干天天弄，根據(jù)滿(mǎn)寧公式按此例求得。

The formula of discharge varying with normal water depth in cubic parabola shape open channel uniform flow and the conditions satisfied by the optimal hydraulic cross-section in the cubic parabola shape channel were deduced according to the theory of open channel uniform flow .

根據(jù)明渠均勻流理論91POPNY老北熟女，推求了立方拋物線形渠道正常水深與流量關(guān)系的計(jì)算公式及其水力最優(yōu)斷面所滿(mǎn)足的條件男女一级黄色视频。

By using both the hydrogen decrepitation and double-alloy processes to avoid soft magnetic Laves phase,we prepared N35AH sintered Nd-Fe-B permanent magnet with ultra-high coercivity,which can be used at temperature up to 240℃.

現(xiàn)在汽車(chē)驅(qū)動(dòng)電機(jī)、水力風(fēng)力發(fā)電機(jī)九九色影院亚洲欧洲、壓縮機(jī)電機(jī)欧美性高潮xxxx、船舶用大功率推進(jìn)電機(jī)等領(lǐng)域?qū)Ω呤褂脺囟葻Y(jié)Nd-Fe-B磁體的需求日益增長(zhǎng)，所以提高燒結(jié)材料的耐熱性成為當(dāng)今釹鐵硼行業(yè)的主要研究方向之一黄色黄片。

The fresh grass carp sold in market was processed to freezing semi-dry products with low salt and high water through salting, drying, packaging, deepfreeze and frozen storage, and the changes of the water content, the salt content, the water holding capacity and the sensory quality of fish body in the process of frozen storage were studied.

方法］通過(guò)腌制95视频免费看片、干燥、包裝人人欧美乱码专区视频免费、速凍和凍藏將市售新鮮的草魚(yú)加工成低鹽－高水分冷凍半干制品激情aⅴ，研究?jī)霾剡^(guò)程中魚(yú)體水分含量、鹽分含量理论片网址、系水力和其感官品質(zhì)的變化一区二区免费看的黄色片子。

It is composed of ZSFZ wet alarm valve, water-power alarm bell, delayer, pressure switcher, water supply pipe, water sprayer, etc.

系統(tǒng)由ZSFZ濕式報(bào)警閥又大又粗又长又硬好爽国产、水力警鈴、延遲器1024免费电影你懂的、壓力開(kāi)關(guān)欧美性爱生活、水流指示器、供水管網(wǎng)欧美又大又粗性视频、閉式灑水噴頭人人操人人干黄色网站、報(bào)警控制裝置和信號(hào)碟閥等部件組成。

This paper studies the main geometrical parameter such as angle, height, width, stagger and the upper width in dentation and trapezoid flow path, firstly, uses the single-phase numerical simulation of the computational fluid dynamics technique to analyse the influence of different geometrical parameter on discharge coefficient and flow state exponent of drip emitter. Secondly, uses the two-phases numerical simulation of CFD (1% sand content ) to analyse the influence of the above mentioned geometrical parameter on the contribution regulation of sand and anti-clogging performance. Thirdly, uses the PIV （ particle Tracking Velocimetry ） technique which can see the small-scale flow path to observe and test the trajectories and velocities of solid particles in labyrinth flow path, and analyses the basic factors which can influence the movement characteristic of solid particles and the flow state in flow path.

本文以齒形流道禁止18随进入的网站、梯形流道為主要研究對(duì)象国产孕妇一级A片免费观看，以流道轉(zhuǎn)角、流道高亚洲精品自拍AV在线日韩，流道寬日日色综合色色、偏差量及梯形流道上底寬為主要結(jié)構(gòu)參數(shù)，首先應(yīng)用 CFD 單相流數(shù)值模擬技術(shù)對(duì)不同結(jié)構(gòu)參數(shù)灌水器流道水力性能進(jìn)行模擬国产黄色视频流畅在线免费，分析了不同結(jié)構(gòu)參數(shù)對(duì)流態(tài)指數(shù)和流量系數(shù)的影響日韩欧美中文字幕永久，其次，應(yīng)用 CFD 兩相流（含沙量為1%）數(shù)值模擬技術(shù)分析了結(jié)構(gòu)參數(shù)對(duì)含沙量分布規(guī)律和抗堵塞性能的影響古装一级婬片A片AAA毛片，然后日本黄色官网，應(yīng)用 PIV 可視化測(cè)試方法測(cè)試了固體顆粒在流道內(nèi)運(yùn)行軌跡及速度，分析了影響固體顆粒運(yùn)動(dòng)特性及流道內(nèi)流體流態(tài)的基本因素美女网站在线免费视频色。，最后综合性爱欧美吧，對(duì)上述流道結(jié)構(gòu)形式通過(guò)模具加工及滴灌帶試制，進(jìn)行了標(biāo)準(zhǔn)化測(cè)試（ GB/T 17187-1997 農(nóng)業(yè)灌溉設(shè)備滴頭技術(shù)規(guī)范和試驗(yàn)方法與 ISO 標(biāo)準(zhǔn) ISO /TC23 /SC18 /WG5N4短周期堵塞測(cè)試程序）黄片ID久久，測(cè)試結(jié)果驗(yàn)證了 CFD 模擬結(jié)果A片综合网视频在线播放，并提出了迷宮結(jié)構(gòu)流道灌水器的抗堵塞設(shè)計(jì)方法。