Therefore, the numerical simulation of cavitating flow is becoming more and more important.

本文采用雙流體模型對(duì)水力機(jī)械中三維兩相空化湍流進(jìn)行數(shù)值模擬草久草久。

Feature : this product does not contained any kind of colourings, it is made of pure wool and thewater absorbance ability is excellent.

特 點(diǎn)：本產(chǎn)品不含任何染料毒素日韩性爱视频中文字幕，100%天然純綿aaaa日韩。吸水力強(qiáng)视频黄页大全。

Short water retention time explained the low abundance of copepods in Feilaixia reservoirs.

水力滯留時(shí)間很短是引起飛來(lái)峽水庫(kù)橈足類種群波動(dòng)的主要因素。

The hydraulic decoking system of the delayed coking unit in Nanjing Refinery was revamped by adding a high-pressure water pump and a program control system.

對(duì)南京煉油廠延遲焦化裝置水力除焦設(shè)施進(jìn)行改造久草av电影一区，增加一臺(tái)高壓水泵及程序控制系統(tǒng)欧美午夜aaaaaa，提高了切焦效率及系統(tǒng)的安全性，確保了裝置長(zhǎng)周期正常運(yùn)行114毛片。

The results show that single structure parameters (width and depth of flow path/passage, and height, and angle of dentations) are local and difficult to represent the anti-clogging ability of emitters. Characteristic structure parameters(minimum size of cross section, hydraulic radius and dentitions spacing) can represent the anti-clogging ability of emitters in a sense. There are anti-clogging critical values under the test. Rated flow Qr and the ratio of diameter of labyrinth passage to diameter of particle η are well cor related to the anti-clogging ability and have anti-clogging critical values too.

結(jié)果表明：用單一結(jié)構(gòu)參數(shù)(流道寬度 W 91三级片在线、流道深度 D 、齒高度 h 和齒角度θ)表征其抗堵塞性能存在局限性特级毛片A片全部免费网站；結(jié)構(gòu)特征參數(shù)斷面最小尺寸 min(D又大又硬AV无码中文，W、水力半徑 R 和齒間距 l 能較好反映滴頭流道橫国产一级A爱片在线视频、縱斷面的結(jié)構(gòu)特征色色色鬼，在不同程度上表征了流道的抗堵塞性能，且在試驗(yàn)條件下各自均存在抗堵塞臨界值日本AAA片视频；滴頭額定流量 Qr 和迷宮滴頭徑粒比η與抗堵塞性能相關(guān)性較好精品无码人妻遭多人侵犯Av，且存在抗堵塞臨界值。

In this paper, the present development and appliance of the hydrocyclone applied downhole is introduced.

本文介紹了井下應(yīng)用水力旋流器的目前發(fā)展?fàn)顩r及應(yīng)用情況久操美女在线视频。

In recent years, although chinas dredging industry has achieved vigorous development, the key equipment such as slurry pumps of large and medium sized hydraulic dredgers are mainly imported from abroad. So it is necessary to study the slurry pump.

盡管近幾年來(lái)國(guó)內(nèi)疏浚事業(yè)有了蓬勃的發(fā)展精品欧美哟哟，但目前國(guó)內(nèi)大中型水力式挖泥船的關(guān)鍵設(shè)備如泥泵等還依賴于進(jìn)口或仿制，所以有必要對(duì)疏浚泥泵進(jìn)行研究性刺激的欧美三级视频中文第一页。

It has only been reported in a small number of trees (e.g., Sperry et al. 1994, Ewers et al. 2001). Diurnal refilling via root pressure has been reported in some crop species (Tyree et al. 1986, Stiller et al. 2003), but it is unclear whether trees employ root pressure for daily recovery of hydraulic conductivity.

舉例來(lái)說(shuō)久热精品在线视频， Sperry 等人 1994，大口水罐等人 2001 每日的再將注滿經(jīng)由根壓力已經(jīng)被在一些農(nóng)作物種(Tyree 等人 1986黄色网站啊啊是视频在线免费看，較靜止的等人 2003)方面報(bào)告亚洲乱伦高清无码，但是它是不易了解的是否樹(shù)雇用為水力導(dǎo)電率的每日恢復(fù)植根pe from prison 壓力。

The underflow is led direct onto the belt filter by gravity, the overflow is dropped back to the filtrate tank, however a part of its flow is led to the waste water hydro cyclone feed tank.

水力旋流站底流靠重力直接被排放到真空皮帶機(jī)亚洲美女操逼视频一区二区。

Its composition is 60 to 80% asbestos and 10 to 20% of the rubber, and fillers, curing agents.

它的組分是水力控制閥60～80%的石棉和10～20%的橡膠欧美又色又爽又黄的视频，以及填充劑国产网站视频、硫化劑等国产黄色网站马上看。