水力

The mathematical model for predicting the hydraulic and aeration characteristics of aerator is established and the correction for the emergence angle of the jet is deduced.

一般对Fr＜7的低Fr数流动情况，掺气设施水力及掺气特性与高Fr数流动情况有显著差别，掺气设施的设计也有其特点。

This model considers the effects of wall damage, fracture face damage, variation of fracture conductivity with position and time, heterogeneity and anisotropism, elastic expansion energy on production performance of fractured well. According to this model, a se...

实例计算表明，提供的模型和方法及研制的软件既可用于预测油田压裂前后的生产动态和压裂后的增产效果，又可用于压裂井水力压裂方案的优化设计。

Then Arkwright established a great factory by applying power-driven mules and became Father of Factory System in England.

后来，阿克莱特用水力纺纱机开办了一个大工厂，成为英国工厂体制之父。

Richard Arkwright's water frame in 1769

1769年理查德阿克赖特的水力纺织机

Richard Arkwright's waterframe.

1769年理查德阿克赖特的水力纺织机

He served as a hydraulic engineer with the U.S. Army Corps of Engineers.

曾是美国工程部队的水力工程师。

PDC Bit is used widely in the artesian well of oil field. In drilling, the waterpower is very important to the Bit.

PDC钻头在油田钻井工程中获得了广泛的运用，钻进过程中水力因素对钻头非常重要。

Based on the previous studies and combined with the national important scientific special item—the projection of water environment improvement and comprehensive demonstration in Suzhou city. The influence to water quality melioration under different conditions of packing types, stuffing rate, air supply and hydraulic loading using water of Miaojia river as experiment water sample; the water contaminate removal ability by the absorption and interception of charcoal filling and the research of the denitrification rate of charcoal filling were discussed in the paper. Furthermore, the activity of the biofilm on savageness and artificialness filling surface in the projection demonstration riverway were also analyses.

本人在总结前人研究的基础上，结合国家重大科技专项——苏州城市水环境质量改善与综合示范项目，研究了不同填料基质、填充率、曝气量、水力负荷条件下生物填料对苏州城市重污染河道水质的改善效果；木炭填料吸附、截留作用对水体污染物去除能力及其反硝化脱氮能力；分析了项目示范区河道内天然填料及人工填料挂膜成熟的生物膜活性。

Rhododendron simsii Planch, Aspidistra elatior Blume and the Chamaedorea elegans Mart on the surface constructed wetland on the condition of letting them stay in water from 1 to 7 days.

结果显示，6种植物湿地系统对二级出水中NH3-N、TP的去除效果存在差异，但随着水力停留时间的加长，各系统的总体变化趋势较为接近。

This was the first water-powered astronomical instrument in the world.

这是世界上第一台用水力转动的天文仪器。

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。