Drop water is one kind of common channel system structures,it mustexist that the transition from supercritical flow to subcritical flow when water pass through the gap of drop water.
跌水是一种较为常见的渠系建筑物,当水流经过跌水口时必然产生缓流向急流的过渡。
if we could use the drop water to gauge water accurately, it might not only reduce the loss of head caused by gauging facility of irrigation system, but also might save a lot of additional construction costs for gauging water and also reduce the project quantity, so it is one kind of economical and conv.
跌水为水利工程中一种较为常见的落差建筑物,特别在我国广大丘陵塬坡地区的渠道输水工程中采用的较为普遍。
Discussion on application of square-shaped vertical drop;
一种方型竖井式跌水的应用探讨
As a result,this paper recommends the integrated constructed terrace wetland because it can make good use of drop aeration,and the wetland covers less land and needs lower cost on running and managing than wastewater plant.
该工艺充分利用山体坡度和水体势能进行跌水曝气,不仅节约了耕地,还极大地节省了运行和管理费用。
In order to meet the technical requirements of smaller occupancy area,higher efficiency of nitrogen and phosphorus removal,easier maintenance and lower operation and construction cost in the treatment of rural sewage in the Taihu Lake valley,a full-scale experiment on use of the combined process of anaerobic/waterfall aeration contact oxidation/constructed wetland was carried out.
为了使太湖地区农村污水处理达到占地面积小、除磷脱氮效率高、管理简单、运行和建设费用低的目标,采用厌氧/跌水充氧接触氧化/人工湿地组合工艺进行了工程规模的试验研究。
In order to meet the technical requirements of smaller occupancy area,higher efficiency of nitrogen and phosphorus removal,easier maintenance and lower operation and construction cost in the treatment of rural sewage in Lake Taihu valley,a full-scale experiment on the use of the combined process of anaerobic/waterfall aeration contact oxidation/ constructed wetland was carried out.
为了满足太湖地区农村污水处理占地面积小、除磷脱氮效率高、管理简单、运行和建设费用低的要求,研发了厌氧-跌水充氧接触氧化-人工湿地的组合工艺,并进行了工程试验研究。
Research on Domestic Sewage by Drop-Aeration Biofilm Process;
跌水曝气生物膜法处理生活污水研究
Study on reoxygenation by revetment waterfall in Tongzhou Town section of Tonghui River
通惠河通州段护坡跌水复氧试验研究
Study on Dealing with Domestic Sewage of Small Town by Dorp-aeration Bio-contact;
跌水曝气接触氧化处理小城镇污水的研究
Research on Domestic Sewage with Multi-Grading Drop-Aeration Biofilm Process;
多级重力跌水曝气生物膜法处理生活污水研究
Experimental Study on Factors Influencing the Effect of Falling Water Aeration (Providing Oxygen);
跌水曝气（充氧）效果的影响因素试验研究
Research on Efficiency of Areation and its Effecting Factors with Multi-Grade Drop-Aeration Process;
多级重力跌水中充氧效率及其影响因素研究
Study on Mixing Performance of Adjustable Head Fall Mixer with Grids
可调式跌水网格混合器的混合性能研究
The prices for fruit have begun to come down.
水果的价格开始下跌。
She tripped over and landed in puddle.
她绊了一下跌在水潭里。
She tripped over and landed in a puddle.
她绊了一下,跌在水坑里。
They are at their lowest level in thirty years.
跌至30年来的最低水平。
Real estate prices have plummeted who interests? Family assets or stock prices not?
房价下跌谁利益受损?家庭资产缩水房价跌不得?
fall, jump, be washed overboard
经船舷跌入、 跳入、 被冲入水中.
one bundle of cotton fallen overboard by stevedores
装卸工人将一捆棉花跌落下水
She fell overboard and the sharks got her.
她从船上跌落水中, 被鲨鱼咬了.
He landed on a flat rock that jutted above the surface of the water.
他跌落在一块突出水面的岩石上。
Lord, have mercy on my son: for he is lunatick, and sore vexed: for ofttimes he falleth into the fire, and oft into the water.
主阿，怜悯我的儿子。他害癫痫的病很苦，屡次跌在火里，屡次跌在水里。
Even if you fell in, I could hold you up because we are in the water.
即使你跌倒了，我也能够扶起你，因为我们在水里。