水力

From this formula we can explain the tendency that the hydrovibration frequency increased with decreasing wicket gate opening of Francis turbines.

此式可以解释水力振动频率随混流式水轮机导叶开度减小而增高的趋势，并用两个压力梯度方程初步阐述了压力脉动振幅随工况而变化的现象。

At present, most hydropower plants close the wicket gate by using the closing law with two or three slopes. In fact, as the unit capacity goes up and the turbine working range of water head be even wider than before, so that the fixed closing law with two or three slopes can't control the unit stability effectively when the big fluctuation transient comes op.

目前，普遍采用导叶两段或三段关闭规律，实践表明，随着水轮发电机组容量的增大和水轮机工作水头范围的增大，这种固定的两段或三段导叶关闭方式不能有效地控制机组在大波动水力过渡过程中的稳定性。

It will promote capabilities of domestic independent researching of water-jet deep-penetrating technology.

本文以井下位移检测记录法对水力深穿透射孔机在线测量展开研究。

The age-calculated distribution shows hydraulic continuity of water-bearing medium, which is a basic premise to create mathematic model for prediction of the inflow.

计算的年龄分布还显示了含水介质的水力连续性，这是建立隧道涌水量预测数学模型的基本前提。

Has rich forests and water resources, rich rice, sugar, coconut and so on.

有丰富的森林和水力资源，盛产大米、蔗糖、椰子等。

The sample data of impinging pressure of irrigating water column impinging to seedbed furrow can been direct collected by computer,and the water power characteristic of impinging water column can been studied by analyze the sample data.

要解决这一问题、彰显穴灌坐水播种的优势就必须正确认识灌溉冲击水柱在沟内的水力特性，特别是灌溉水注对种沟沟底的冲击压力特性。

Waste plastic box to protect ball Waste plastic box to protect ball Northwest Oilfield Branch Ministry of oil and gas distribution gas transmission team round of the gate, the station has all of the 34 ball on the plastic protective cover is installed, even if the waste plastic boxes are used, but also to protect the ball.

Waste plastic box to protect ball ；是由上海赛泰泵阀有限公司提供的阀门新闻，中文译文仅供参考(上海赛泰泵阀有限公司还生产电动执行器特殊阀门电站阀门平衡阀水力控制阀及衬氟旋塞阀，衬氟截止阀，高温高压电磁阀，氧气截止阀，微型电磁阀，欢迎您的选购。)废旧塑料盒保护球阀西北油田分公司油气运销部输气队轮台门站近日在34个球阀上全部安装了塑料防护罩，既使废塑料盒得到利用，又保护了球阀。

And it has already been developed from a simple and low fluid volume, low displacement fracturing well stimulation method into a mature technology.

压裂技术也从单井压裂发展到现在综合考虑水力压裂、油藏工程、采油工程及经济评价等的整体压裂技术。

Pump head range and velocity triangle was used with iteration approach for initial model and CFD simulation was applied for parameters decision.

本文改进了传统轴流泵的设计理论，结合人工心脏泵的工作条件和水力条件，引入了扬程范围判断和速度三角形修正相结合的方法，配合迭代逼近获得了人工心脏泵的初始模型，CFD模拟分析为模型参数选择提供了依据。

Due to complicated inside structure of valve and plenty of flow pattern, it has theoretical meanings and practical value to study valve inside flow on the view of hydraulics, especially large diameter cyclic type regulating valve.

由于阀门的内部结构比较复杂，流型多变，因此从水力的角度开展阀门内部流动分析的研究，特别是大口径专用阀门的流场研究，有重要的理论意义和实用价值。

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。