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Ken sprang onto the top of the balance beam, and suddenly the beam shuddered as a small projectile hit it.

肯恩在平衡光线的顶端之上跳，而且突然光线战栗如一个小的发射碰撞它。

We optimized worktable, movable beam and top beam of MPF press respectively by finite element and Sub-problem optimized arithmetic, which are also important content in the thesis .

利用有限元法和 Sub-problem 优化算法，分别对多点成形压力机的工作台、活动横梁和上横梁进行结构优化设计，也是本文的主要研究内容。

In this test a simply supported plain concrete beam is loaded at its third points, the resulting bending moments inducing compressive and tensile stresses in the top and bottom of the beam respectively.

在本试验中一简支素混凝土梁在其每个三分之一处受荷，弯曲瞬间在梁的顶部和底部分别产生压应力和拉应力。

The experimental results show that the size of large particles on coatings surface was decreased obviously by N ion beam assisting bombardment, and surface morphology was optimized. Unitary TiN phase was obtained and softer Ti2N phases were eliminated by N ion beam assisted bombard. As the energy of bombard increased, TiN (111) crystal orientation gradually reduced and (200) gradually enhanced. The micro hardness of coatings reinforced too.

结果表明：N离子束辅助轰击，能够有效地减少和降低膜层表面&大颗粒&的数量和尺寸，消除了膜层中较软Ti2N相，得到了单一的TiN相，随着轰击能量的增加，TiN相结构不发生变化，TiN（111）取向逐渐减弱，而（200）取向逐渐增强。N离子束辅助轰击能量的增加，提高了膜层的显微硬度。

It is found that the stiffness of the beam is inadequate, which result in two gaps between the central beams of the moving beam; there are two weak strength sections where existing in the tie rod cylindrical hole and chamfering nearby the perforation cylinder.

通过分析发现横梁的刚度不足，致使中梁之间有两处开缝；强度较薄弱存在两处，分布在拉杆的圆柱孔边和穿孔缸附近的倒角处。

By analysis and comparison on the design of two beam-arch combination system bridges, this paper reflects the decisive influence of stiffness ratios of arch to beam in this kind of bridge design directly, and analyzes different design methods of these two bridge on arch rib tie bolt, and other key points for these two kinds of bindges.

本文通过对两座拱梁组合体系桥梁设计的比较和分析，直观地反映了此类桥梁设计中拱梁刚度比的决定性影响；同时分析了两桥在拱肋、系杆等细节的不同设计方法。

Impact factors of a simply supported beam, a three-span continuous beam and a cable-stayed bridge are evaluated and compared with various models of vehicle and various speeds of train.

选取简支梁桥、连续梁桥及斜拉桥等3个实例，在各种车辆模型及各种车辆速度作用下，对桥梁的冲击系数进行了全面的计算和比较。

A new way to change the parameters of non-diffracting beam using a popular sphere lens telescope system is proposed based on the relationship of lens transform between non-diffracting beam and ring light source.

本文提出一种用普通球面透镜望远系统来改变无衍射光束参数的新方法。

The focusing beam radius' ratio between the telescope lens compound system and the single lens increases via length (70~400mm) increasing, and the maximum ratio is 30, meanwhile the ratio between the telescope-lens compound system and the single lens decreases via length (70-400 mm) shorting, but the maximum difference of the focusing beam radius' is 0.043μm.

结果表明，随着距离(70~400mm)的增加，两者的聚焦效果相差增大，最大为30倍；随着距离(70~400mm)的减小，两者的聚焦效果相差减小；经望远镜和薄聚焦透镜组合系统聚焦的高斯光束束腰处光斑半径随距离(70~400mm)变化的最大值为0.043μm。

In order to ensure PC beam track's precision, it has unique formwork. The formwork is also introduced in this paper. According to the study on all kinds of force and linetype of PC beam track, the theoretical formula of inverted camber and striking angle are established.

由于其自身的独特特点，PC轨道梁最为特殊的就是其制作尺寸精度要求极高，为了保证其精度，它有比较独特的模板系统，本文也对其模板系统做了简要介绍。

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。