结构的

GHz ridge－loaded helical groove slow wave structure with a 20kV electron beam are given and the investigations of the effect of the ridge dimensions and electron beam parameters on the small signal gain are carried out. It is indicated from the calculation results that this type of structure is suitable for use as s SWS of high power, high gain but narrow passband millimeter TWT, of which the 3dB gain bandwidth is 3.4%. In order to increase the bandwidth, the reduction of the ridge gap or the increase of the electron beam current in an allowable range may be useful.

GHz的脊棱加载慢波结构的具体尺寸，并对此结构中小信号增益随脊尺寸的变化情况及电子注参数对其影响进行了研究，计算结果表明：此结构适宜于作为高增益窄带毫米波大功率行波管的慢波线，其3dB增益带宽为3.4%，为了展宽其工作带宽，可以适当减小间隙宽度，也可在一定范围内提高电子注电流。

According to the geometric evolution of the substituted polyynes from theacetylenic-like resonance form to the cumulenic-like (charge-separated)resonance form, it is obtained that there are two kinds of resonance form of thesubstituted polyyne.

根据取代多炔几何构型从多炔烃共振结构逐渐演变到累接双键烃共振结构的过程，表明取代多炔存在着两种共振形式。

2Shear deformation of joint and second order effect would increase failure probability , and decrease seismic resistance reliability of steel frame.

2结构的二阶效应和节点的剪切变形会增大结构发生各种破损的概率，降低结构的抗震可靠度。

Finally,the researches of str...

最后，对该结构作了弹塑性极限承载力研究，并就结构的安全度作了探讨。

The developing process of financial structure excellence is a unified process of order and directionality in the changes of financial structure.

推进中国金融结构高度化是调整和优化中国金融结构的一个重要方面。

The characteristics of two oscillators with and without DGS were analyzed and compared.

分析并比较了具有DGS结构和没有DGS结构的两种振荡器性能。

In the whole considered frequency range, the acoustical performance of rotationally asymmetric structures is better than that of symmetric structures.

且在整个计算频率范围内，非旋转对称结构的吸声性能都要优于旋转对称结构。

In addition, owing to Bi-system superconductors in the structure are more complex, these questions are

Bi系超导体在结构上比Y系更复杂，尤其是受调制结构的影响，在许多细节问题上至今仍存争议。

Furthermore, isolation design can effectively decrease section size, reinforcement, engineering cost and story drifts of superstructures.

指出隔震设计可以有效减小上部结构的截面尺寸和配筋，降低工程造价以及减少上部结构层间位移。

The hydration heat model of concrete is established on the basis of Arrhenius law that is adopted to analyze the influence of temperature on heat evolution rate of early-age concrete.

混凝土结构的早龄期非荷载开裂是影响混凝土结构耐久性的主要原因之一[1]，所以在混凝土结构设计阶段对混凝土的早龄期抗开裂能力进行分析是十分重要的。

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。