Duckbill valve installation: 1, straight-through lift-type check valve should be installed in horizontal pipe on the road, vertical lift check valve and bottom valve is usually installed in a vertical pipe on the road, and the bottom-up flow of media.

一、鴨嘴閥的安裝使用： 1黄色网站线上免费、直通式升降式止回閥應(yīng)安裝于水平管路上九九爱综合，立式升降式止回閥和底閥一般安裝在垂直管路上偷窥偷拍欧美，并且介質(zhì)自下而上流動亚洲欧美日韩欧美。

The thesis expatiate on the thought base,principle,design process and calculate technique that used in the foundation of the service pipe network geography information manage system,and set up each module's math model.It handles the network's graphics and words in a whole using the geography information system technique.That will make the water pipe network management easy, facilely and exactly.

本文詳細(xì)闡述了建立城市給水管網(wǎng)地理信息管理系統(tǒng)的思想基礎(chǔ)欧美性色生活片在线观看视频、遵循原則、設(shè)計過程以及采用的計算技術(shù)曰韩美女一级视频，對管網(wǎng)各功能模塊建立了數(shù)學(xué)模型免费国产黄网站在线观看视频，運(yùn)用地理信息技術(shù)對城市給水管網(wǎng)進(jìn)行了圖形和屬性數(shù)據(jù)一體化的操作，從而使給水管網(wǎng)的管理更加直觀人人操人人模人人操、便利和準(zhǔn)確最新日韩精品第一页。

Dynamic pressure averaging pipe was generally applied to blowing rate measurement in rectangular pipe of power plant, the average velocity of flow in the section was represented by the average dynamic pressure at the line through the geometric center of the cross section, and then the blowing rate was determined.

針對這一問題，本文設(shè)計了基于"對數(shù)契比雪夫法"的送風(fēng)流量測量裝置国产人人艹人人干，將5支動壓平均管置于同一截面中文自拍日韩视频在线观看，按"對數(shù)契比雪夫法"選點(diǎn)位置開孔，把這5支動壓平均管的靜壓輸出孔A性视频AAA、總壓輸出孔分別連接到一起作為傳感器組件的差壓輸出日韩精品视频热线在线观看，實(shí)驗(yàn)表明這種方法使測量準(zhǔn)確度明顯提高。

Existing literature on the inquiry,collation and analysis,this article had the following major tasks:1st,finite element simulation of the current analytical methods are summarized,and system introduction finite element software ADINA and ANSYS applied in the reinforced concrete built-up section.2nd,system introduction reinforced concrete component material performance as well as reinforced concrete nonlinear analysis main mathematical model. 3rd,the use of ANSYS and ADINA software simply supported beam simulation were compared.4th,uses the ANSYS analysis software,conducted 7 radical center bearing reinforcing steel-side steel pipe concrete short stump simulation test research,the research had indicated the reinforcing steel the existence strengthened the pillar ductility greatly.5th,based on ANSYS,has conducted 2 radical center bearing reinforcing steel-side steel pipe concrete member in bending simulation test research.

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The research work consists of the analysis and determination of the dominant propagating waves in pipe, the revealment of nature of energy propagation and distribution in pipe-fluid system, the establishment of the energy flow measuring theory and methodology and the realization of energy flow measuring system.

研究內(nèi)容包括：分析確定管道系統(tǒng)中的主要振動波婷婷在线综合，揭示流體管道系統(tǒng)中振動能量流的傳遞和分布規(guī)律，建立關(guān)于管壁振動能量流的測量理論與方法三级片AAA，實(shí)現(xiàn)能量流的測量技術(shù)亚洲欧美性爱片。

In consideration of the problem of drill pipe bending steering in radial horizontal well drilling, ANSYS software is used to simulate its major influencing factors, such as slideway trajectory curvature, clearance, working pressure, roller shape and position and thickness of drill pipe by establishing a finite element model for the bending steering mechanism.

針對徑向水平井鉆進(jìn)中鉆桿彎曲轉(zhuǎn)向前進(jìn)運(yùn)動困難的問題，通過建立彎曲轉(zhuǎn)向機(jī)構(gòu)仿真有限元模型精品在线视频99，對其主要影響因素：滑道軌跡曲率中文字幕第几页、間隙特级欧美AAAAAA视、工作壓力、滾輪形狀與位置和鉆桿壁厚等用ANSYS軟件進(jìn)行仿真研究最近2019年在线中文字幕大全。

Studied the solid particles cyclone separation under structural parameters and operating parameters of different hydrocyclone, the results showed that major factor influence split ratio is in the ratio of entrance to exit pressure of hydrocyclone. Exit pressure has a certain influence on the split ratio, the various of the diameter and cone angle of hydrocyclone (in the ratio of entrance to exit pressure is constant) have no influence on split ratio; With diameter and cone angle increase, the separation granularity gradually increasing and recovery ratio decreasing; With entrance pressure increase, the separation granularity of hydrocyclone decrease, the split ratio of underset will increase slowly; With the diameter of overflow pipe increase, the separation granularity of hydrocyclone increasing and recovery ratio decreasing; With the diameter of underset pipe increasing, the separation granularity of hydrocyclone decreasing and recovery ratio increasing.

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This utility model disclosed a dust removal equipment, environmental protection, their characteristics is that, including filters, dust collection equipment and negative pressure ventilation machines, referred to the vertical filter settings are arranged in descending sequence multi-aperture filter, its Set large aperture filters connected at one end of inlet pipe, set a small aperture at one end of filters connected through the vacuum exhaust fan out of the wind pipe, dust collection equipment installed in the bottom of each layer filters.

本實(shí)用新型公開了一種環(huán)保除塵設(shè)備欧美一级人人曹，其特征在于国产三级片插逼视频，包括過濾器、集塵裝置和負(fù)壓抽風(fēng)機(jī)都在搜av免费观看，所述過濾器內(nèi)垂直設(shè)置有多層孔徑依次從大到小排列的過濾網(wǎng)黄色a级片又大又爽又黄又好看的，其設(shè)置有大孔徑過濾網(wǎng)的一端連接進(jìn)風(fēng)管，設(shè)置有小孔徑過濾網(wǎng)的一端通過負(fù)壓抽風(fēng)機(jī)連接出風(fēng)管美女视频黄视频，集塵裝置設(shè)置在每層過濾網(wǎng)的下端欧美在线观看精品一区二区三区。

In the invention, heat exchanging pipe is washed once by water in every interval. The scale removal flow is provided with big shear stress and strong embedding ability. It can wash gruel sale of the pipe wall down and clean on line so that purposes of maintaining high-efficiency heat conduction of air cooler, prolonging the running period of air cooler and decreasing operation cost, are achieved.

本發(fā)明每間隔一段時間，通入水對換熱管束沖刷一次天天色,天天干,天天日，除垢水流的剪切應(yīng)力大，裹挾能力強(qiáng)国产三级片一区,二区在线，能使管壁上剝落的粥樣水垢沖刷掉超碰免费在线站长工具，起到在線清洗的作用，從而達(dá)到維持空冷器高效傳熱只久久久久久久久久久、延長空冷器運(yùn)行周期国产特黄特色视频网站、降低運(yùn)行成本的目的欧美中韩一区二区。

In a typical trip out of the hole, the derrickman wears a special safety harness that enables him to lean out from the work platform to reach the drillpipe in the center of the derrick or mast, throw a line around the pipe and pull it back into its storage location until it is time to run the pipe back into the well.

在典型的起鉆過程中，井架工系上特殊的安全帶午夜在线色呦呦，這樣能夠使他從工作平臺上傾斜去接近位于井架或者桅架中央的鉆桿人妻人操人人操人人插，扔一根繩子去纏繞鉆桿，然后拉動鉆桿到其存儲的位置亚洲网站黄色，直到再把這些鉆桿下入到井眼時為止日韩成人精品视频自拍。