水力

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

本文采用双流体模型对水力机械中三维两相空化湍流进行数值模拟。

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

特 点：本产品不含任何染料毒素，100%天然纯绵。吸水力强。

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

水力滞留时间很短是引起飞来峡水库桡足类种群波动的主要因素。

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.

对南京炼油厂延迟焦化装置水力除焦设施进行改造，增加一台高压水泵及程序控制系统，提高了切焦效率及系统的安全性，确保了装置长周期正常运行。

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.

结果表明：用单一结构参数(流道宽度 W 、流道深度 D 、齿高度 h 和齿角度θ)表征其抗堵塞性能存在局限性；结构特征参数断面最小尺寸 min(D，W、水力半径 R 和齿间距 l 能较好反映滴头流道横、纵断面的结构特征，在不同程度上表征了流道的抗堵塞性能，且在试验条件下各自均存在抗堵塞临界值；滴头额定流量 Qr 和迷宫滴头径粒比η与抗堵塞性能相关性较好，且存在抗堵塞临界值。

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

本文介绍了井下应用水力旋流器的目前发展状况及应用情况。

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.

尽管近几年来国内疏浚事业有了蓬勃的发展，但目前国内大中型水力式挖泥船的关键设备如泥泵等还依赖于进口或仿制，所以有必要对疏浚泥泵进行研究。

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.

举例来说， Sperry 等人 1994，大口水罐等人 2001 每日的再将注满经由根压力已经被在一些农作物种(Tyree 等人 1986，较静止的等人 2003)方面报告，但是它是不易了解的是否树雇用为水力导电率的每日恢复植根pe from prison 压力。

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带机。

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

它的组分是水力控制阀60～80%的石棉和10～20%的橡胶，以及填充剂、硫化剂等。

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。