延长铅锌密闭鼓风炉系统清扫周期的生产实践

分析了影响铅锌密闭鼓风炉系统清扫周期的因素，介绍了采取的相应措施及取得的效果。     

Modal identification of long-span Runyang Bridge using ambient responses recorded by SHMS

Runyang Bridge is a newly built cable-supported bridge that crosses the Yangtze River in China. The bridge is composed of one suspension bridge and one cable-stayed bridge. During the construction of the bridge, a structural health monitoring system (SHMS) was installed, which was designed by the Southeast University. Since the bridge was open to traffic, quantities of structural ambient responses have been recorded by the SHMS. And, it’s really important to extract structrural information from these records for health monitoring. This paper presents the study on modal identification of the bridge. The dynamic properites including modal frequencies, mode shapes and damping ratios are extracted from the ambient responses. Two identification methods are employed including the enhanced frequency domain decomposition and the stochastic subspace identification. The identified modal parameters from the two methods are compared. Results show that modal frequencies and mode shapes from the two methods are almost the same while the damping ratios are different.     

温馨的墙壁

纽伦堡西部的Schnieglinger StraBe引人瞩目地汇聚了具有Dessau主流住宅风格的别墅。2004年，这一开发区被授予了纽伦堡城市建筑奖。     

更加安全的新型模板系统

伯明翰中心繁荣的开发区为Doka公司新近开发的导航攀升系统（GCS），Framax脱 模角落和平台提升系统提供了绝佳的表演场。Orion大楼坐落在航运大街，靠近新街火车站和斗牛场购物中心，它包括300间公寓住宅，一个三层的玻璃顶楼，     

当阿拉伯风格元素遇上现代建筑

杰出的建筑师需要卓越的解决方案，新的卡诺尔大使馆建筑所面临的挑战之一就是批出最优方案，将由花岗岩制成的厚立面板安置在外墙的Poroton砖石上，高度复杂的立面结合复杂的建筑细部，它需要一种独特的解决方案。     

FW60＋系统奏响了音乐大厅的时代音符

对于一座建筑来说，在竣工的两年内就奠定其神圣的地位是一件非同寻常的事情，但是公正地讲，在Gateshead,坐落于Tyne ＆ Weir的Sage音乐大厅，关于它的一切都是不同寻常的。     

新旧建筑的承重结构

卡内基图书馆的扩建工程从开始就面临着原有建筑的复杂问题。因为此建筑被列入文物保护名单中．同时也是瓦特福特郡具有历史价值的建筑．所以完全毁坏重建既不是人们所希望的也不是正确的选择。除此之外．建筑两端还与繁华的商业街和零售点毗邻。     

A low-energy ion spectrometer with half-space entrance for three-axis stabilized spacecraft

A low-energy ion spectrometer(LEIS) for use aboard three-axis stabilized spacecraft has been developed to measure ion energy per charge distribution in three-dimensional space with good energy-, angular-and temporal-resolutions. For the standard top-hat electrostatic analyzer used widely in space plasma detection, three-axis stabilized spacecraft makes it difficult to obtain complete coverage of all possible ion arrival directions. We have designed angular scanning deflectors supplementing to a cylindrically symmetric top-hat electrostatic analyzer to provide a half-space field of view as 360°×90°(–45°–+45°), and fabricated the LEIS flight model for detecting magnetospheric ions in geosynchronous orbit. The performance of this payload has been evaluated in detail by a series of simulation and environmental tests, and the payload has also been calibrated through laboratory experiments using a low-energy ion source. The results show that capabilities of the LEIS payload are in accordance with the requirements of a magnetospheric mission.     

分析双轴电介质加载对称双侧鳍线特性的谱域导抗法

本文通过分析和推导,在不考虑TE和TM模耦合影响后,用一网络等效表示双轴电介质加载对称双侧鳍线。将场问题转化为路问题,简化了特征方程的推导过程。在网络中使用理想变压器元件等效双轴电介质与各向同性介质分界面处的场匹配条件。最后对双轴电介质加载对称双侧鳍线的有效介电常数进行了数值计算。结果表明本文近似是合理的,有较高精度的数值解。     

单轴介质加载槽波导的色散特性

本文讨论了各向同性介质填充或部分填充槽波导的分区谱域导抗法,利用文献[7],直接半分区谱域导抗法应用到单轴各向导性介质。对单轴介质加载槽波导的色散特性进行分析,给出了数值结果。