inter space
3.On the basis of the paper[3],the weakly magnetized modification for the dispersion relation of the ambient electromagnetic waves is taken into consideration. In the range of 1<ωpe/Ωe<10 (for the solar corona,inter planetary space and galactic radio jets),the growth rates of the ordinary and extraordinary modes excited directly by beam-plasma instability are calculated.
4.The performance of enhanced distributed coordination function (EDCF) was evaluated, compared with the 802.11 legacy MAC in supporting voice, video and data applications through the network simulation of a scenario of 802.11e. The effects of Contention Window (CW) and Arbitration Inter-Frame Space (AIFS) on the service differentiation and total throughput were discussed.
6.Now it must be pretty generally accepted that modern astronomy, by exploring the entire visible universe, is forcing us to accept this earth itself as a very heaven, and the Heaven that we dream of must occupy some space, and occupying some space, it must be somewhere among the stars in the firmament, unless it is in the inter-stellar void.
7.She had performed on several international events, interviewed by ASTRO channel, held an open space performance of 100 pieces of Festive Drums, held 6 National Training Camps and Drum Rallies, 5 inter-state tour performances, 3 full fledge performance, and won many awards and hearts of the audience.
8.To meet the demands for large space and flexible compartmentation of buildings,laminated vierendeel trusses are adopted in high-position transfer story structures.First the bearing characteristics are analyzed,in which reasonable stiffness ratio of the upper chord,middle chord,and lower chord is derived.Then combined with an actual engineering model (1∶8 similar ratio),the static loading and pseudo-dynamic tests of two models for laminated vierendeel truss used in transfer story structures are conducted,in which one model adopts reinforced concrete,and the other adopts prestressed concrete and shape steel concrete.Seismic behaviors are analyzed,including inter-story displacement,base shear-displacement skeleton curves,and equivalent viscosity-damping curves.A program is programmed to carry out the elasto-plastic dynamic analysis,and displacement time-history curves of the two models are derived.The test and analysis results show that the laminated vierendeel truss with prestressed concrete and shape steel concrete has excellent seismic behaviors.It can solve the disadvantages of laminated vierendeel trusses used in transfer story structures.Finally,some design suggestions are put forward,which can be referenced by similar engineering.
为满足建筑物大空间和灵活隔断要求,在高位转换层结构中采用迭层空腹桁架结构.首先分析了其受力性能,得出了空腹桁架各构件合理的截面刚度以及布局形式.然后结合一实际工程,进行了两榀迭层空腹桁架转换结构模型(1:8相似比)的竖向荷载下静力试验以及拟动力试验.其中一榀为普通混凝土迭层空腹桁架,另一榀配置了预应力和钢骨混凝土,对比分析了两模型的层间位移比、骨架曲线以及等效粘质阻力系数等抗震性能的比较,并进行了弹塑性动力分析.试验和分析结果表明,配置预应力和型钢混凝土的迭层空腹桁架转换结构具有良好的抗震性能,可以成功地解决迭层空腹桁架作为转换层结构所产生的弊端问题,最后对这类转换层结构提出了相应的设计建议.收藏指正
