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A DC-5 GHz single-pole double-throw radio frequency micro-electro-mechanical systems switch that employs lateral metal-metal contacting is designed.

设计了一种基于横向金属接触的DC-5 GHz单刀双掷RF MEMS开关,该开关包括一套有限地共面波导传输线和左右摆动的悬臂梁。

A DC-5 GHz single-pole double-throw radio frequency micro-electro-mechanical systems switch that employs lateral metal-metal contacting is designed. It consists of a set of quasi-finite ground coplanar waveguide transmission lines and a left right swing cantilever beam.

设计了一种基于横向金属接触的DC-5 GHz单刀双掷RF MEMS开关,该开关包括一套有限地共面波导传输线和左右摆动的悬臂梁。

The left singular vector of the projection has been tracked by the projection approximation subspace tracking algorithm. Then the modal parameters are obtained by least square method. At last an experiment is made using a cantilever beam to prove the efficiency and stability of the method by changing the frequency band of the exciting signal.

通过子空间跟踪算法,不断跟踪计算投影的左奇异值向量,再利用最小二乘法求出系统的模态参数,最后用悬臂梁作为实验模型,通过不断改变系统激励的频带范围,验证方法的有效性及稳定性。

Through the assimilating and analyzing the construction materials and the design of reinforced concrete arch bridges with long span from both domestic and abroad, the thesis studies the effect of the arch axis geometry, rise-span ratio, arch ring section and spandrel structures, as well as the ultimate bearing capacity and stability of the entire bridge on the design of reinforced concrete arch bridge. In addition, in consideration of construction, the thesis also studies the applicability of different construction methods such as cable crane system, stiffened skeleton system, swing construction system and cantilever construction system and correspoindingly economica spans and their applications of the reinforced concrete arch bridges.

本论文通过对国内外大跨径钢筋混凝土拱桥的设计、施工资料的收集及其出现问题的分析,从设计角度研究了拱轴线形、矢跨比、拱圈截面及拱上构造、全桥极限承载能力及稳定性对钢筋混凝土拱桥设计的影响;从施工角度研究了缆索吊装法、劲性骨架法、转体施工法、悬臂施工法等不同施工方法的钢筋混凝土拱桥的经济适用跨径及其适用条件。

Heated, cantilevered benches made of black slate offer visitors a warm place to pause in between a hot and cold bathing cycle.

可加热的悬臂式长凳以黑色石板为材料,为顾客提供了一个温馨的停驻场所,坐在这里顾客可以充分地体会到炎热与寒冷的洗浴环境。

The inventive silicon based piezo-electricity socle girder miniature power supply device, pertains to the micro-energy sources field in the electronic technology Micro Electro-Me-chanical Systems field.

本发明一种硅基压电悬臂梁微型电源装置,属于电子技术和微机电系统领域中的微能源领域。

The predominantly south-southwest orientation required deep overhangs to cut down glare and soften the light quality in the home.

西南向南方向的深悬臂降低了光照强度,使得屋内的亮度更加柔和。

The interferegram sequence with different motion phases is collected via stroboscopic photography.

提出一种基于傅里叶变换的频闪显微干涉测试方法,对微谐振器和微悬臂梁的离面运动进行测试研究。

As the susceptive part of such sensor, micro-cantilever is coated on a thin film to adsorb the analytes in environment.

作为该传感器中的敏感元件,微悬臂的表面会涂镀一层敏感层以吸附环境中的被测物。

Results:The occurrence rate of the depression, the duration of long time working at the desk,the duration of long time working with a suspensory arm posture,hypertension, and stomach ...

结果抑郁发生率分别为:颈椎病组33.0%,对照组7.9%,伏案工作时间分别为颈椎病组54.7%,对照组21.1%,悬臂工作时间分别为颈椎病组32.1%,对照组13.2%,两组高血压发病率分别为颈椎病组44.3%,对照组19.7%,两组胃病发病率分别为颈椎病组35.8%,对照组26.3%。

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