堰

Three small overflow dam s with different grade in an urban river were constructed and the water quality in different fixed sample points were periodically monitored.

对人工搭建的三个不同坡度的小型溢流堰堰体上下的水质进行定期监测，考察溢流堰坡度对水体溶解氧和有机污染物浓度的影响。

"Such weirs were called staunches or flash-locks; they did not disappear from the bigger rivers till present times, and may still be seen in the Fens."

这种堰被称为拦水堰或泄水闸门；它们直到近代才逐渐消失，有时在剑桥郡和林肯郡的低洼地区还能看到。

"Such weirs were called staunch es or flash-locks; they did not disappear from the bigger rivers till present times, and may still be seen in the Fens."

这种堰被称为拦水堰或泄水闸门；它们直到近代才逐渐消失，有时在剑桥郡和林肯郡的低洼地区还能看到。

"Such weir s were called staunches or flash-locks; they did not disappear from the bigger rivers till present times, and may still be seen in the Fens."

这种堰被称为拦水堰或泄水闸门；它们直到近代才逐渐消失，有时在剑桥郡和林肯郡的低洼地区还能看到。

Three rebuilt programs which are ogee weir, maze weir and board-crest weir with controlled by gates are compared in technology and economy such as water discharge, flood level, structure safe stabilization and the project investment. At last, the maze weir program is best among the three ones.

通过对WES实用堰、迷宫堰、闸控式宽顶堰三个改建方案在泄流量、洪水位、结构安全稳定性、工程投资等技术、经济比较，综合评价选出迷宫堰方案为最优方案。

Based on an analysis of the mechanism of flow pattern alternation, approximate criterion for flow pattern alternation was formulated, and a numerical model was worked out for simulation of free overfall and submerged overfall alternation by combination of the above two models.

分析两种不同水流形态的交替机理，建立两种水流的转换条件，联立两种不同形态的数学模型构成保水堰的堰流和满流交替的非恒定流数学模型。

According to the hydraulic property of overflow weirs under steady flow, the flow patterns of overflow weirs were classified into free overfall and submerged overfall, and numerical models for unsteady flow were established to simulate the two flow patterns respectively.

摘要为了对保水堰的交替水流进行数值模拟，依据保水堰恒定流情况下的工作特性，将保水堰的水流形态分成堰流和满流两种状态，分别建立保水堰不同流态下的非恒定流数学模型。

For example: the CPPCC National Committee hall, Peking University, Beijing Academy of Military Sciences, Zhejiang small flowers Theatre, Hangzhou Dongpo Theatre, Grand Theatre, Wenzhou, Yangzhou China-Japan friendship Hall, the auditorium in Hebei Province, Jilin City Hall, Guangzhou Xinghai Concert Hall, Shenzhen flights are Building, Jinyun Radio Conference Centre, Shandong TV, Hefei Yangtze River Theatre, Theatre Arts, Ningbo, Hangzhou Xiaoshan District Wen堰镇Style Centre, Shandong Laiwu City Convention and Exhibition Center, Qingdao People's Hall, Taizhou Jiaojiang Theatre, the Xi'an Institute of communication.

全国政协礼堂、北京大学、北京军事科学院、浙江小百花剧团、杭州东坡剧院、温州大剧院、扬州中日友好会馆、河北省政府礼堂、吉林市会堂、广州星海音乐厅、深圳航都大厦、缙云广电会议中心、山东电视台、合肥长江剧院、宁波艺术剧院、杭州萧山区闻堰镇文体中心、山东莱芜市会展中心、青岛人民会堂、台州椒江剧院、西安通信学院等。

Based on observation data, the development process of the breach of landslide dams due to over topping may divided into 3 modes: vertical erosion, breadthwise extension and regression erosion of dam slope. A mathematical model describing the gradual failure process of the landslide dams is established based on the formula expressing the high intensity erosion obtained from experimental data, which can integrate the 3 modes of breach development process together. The validity of the model is verified by observation data.

根据一般滑坡堰塞坝特点和实际观测到的堰塞坝溃口发展规律建立了一个溃口扩展模式，并将溃口扩展过程归纳为溃口垂直下切、横向扩展和坝坡溯源冲刷3种主要表现形式，采用通过试验资料建立的高强度泥沙冲刷计算公式将这3种表现方式联系在一起，建立了堰塞坝逐渐溃决数学模型，并利用实测溃坝资料验证了模型的可靠性。

And the pressure drop of liquid-layer is mainly influenced by weir height. With the increasing of weir height, the pressure drop increases. And it is independent of bare tower velocity and plate dimension. The correlation before was corrected as follows:ΔpL＝3911Z This paper analyzed the heat transfer coefficient between the outer wall of heat tubes and cooling water. And it was considered that plate geometries、weir height、bare tower velocity and heat flux density would affect the heat transfer coefficient.

而液层阻力主要受堰高的影响，堰高越高，液层阻力越大，与空塔速度和孔板的几何尺寸无关，对以往的公式进行修正后得到实验关联式如下：ΔpL＝3911Z 本文对加热管外壁与冷却水之间的换热系数进行了分析，认为孔板的几何尺寸、堰高、空塔速度以及热流密度均会影响换热系数。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。