查询词典 beam-focusing

For two parallel, interconnected beams, the beam with the greater load shall be considered as unbraced and the other beam as braced at the points of interconnection.

对于同方向互联的两个横梁，负荷较大的那个横梁被视为不加支撑的，另外一个横梁在互联点处为不加支撑的。

This paper gives analyses of form-finding for beam string structures and provides an alternative method of lowering temperature of string to find beam string structures' undeformed configuration.

对预应力索－梁结构体系的形状确定问题进行了分析。

The unprinted credit card inspection system takes the advantage of the collimation characteristic of laser. We use a beam expander to expand a laser beam broad enough to cover the whole credit card without losing its collimation characteristic.

其信用卡的刮痕检测系统，利用雷射平行光的特性与扩束器的原理，将雷射光束放大到足以涵盖整张待测的信用卡，然后将影像反射在一屏幕上以减少雷射光强度，进而得以清晰撷取刮痕影像。

Firstly, the optical structure of the measurement region of the dual beam laser Doppler velocimeter is derived exactly based upon the wave function of Gaussian beam.

首先从高斯光束的波动方程出发，推导出双光束激光多普勒测速仪相干区域的光学结构及随被测体一起运动的微粒所散射的光波函数。

The distribution of electron beam velocity ratio and velocity spread on axis was discussed, and the effects of the anode voltage on electron beam performance was studied.

给出了电子束速度比、速度零散沿轴线的分布，进而讨论了阳极电压对电子束性能的影响，结果表明选择适当的阳极电压和阴极磁场对得到好的电子束参量作用明显。

Such as: how to better play to high-performance concrete properties; how to avoid temperature changes, shrinkage and creep of concrete, foundation, uneven settlement and so on; how to ensure that close up before the end of the vertical deflection of the cantilever 2 and the main beam axis deviation of the lateral shift does not exceed the permissible range; how to ensure that folded after the bridge linear positive; how to avoid the construction of the main beam and so there have been a big stress.

如何更好地发挥高性能混凝土性能；如何避免温度变化、混凝土收缩徐变、地基不均匀沉降等的影响；如何保证合拢前两悬臂端竖向挠度的偏差和主梁轴线的横向偏移不超过容许范围；如何保证合拢后的桥面线形良好；如何避免施工中主梁截面出现过大的应力等。

Five full-scale specimens were tested in this study. One is unreinforced beam-to-column connection, and the other four specimens are reinforced with either shear tab or vertical stiffener at beam-to-column connection.

五组试体包含一组未补强之梁柱接头试体，与四组以剪力板或垂直加劲板补强梁柱接头处之试体。

The plastic deformation capacity of the specimens having web openings in plastic zone of the steel beam depends on the reinforcement at beam-to-column connection. The unreinforced specimen could not develop enough ductility, while the specimens reinforced with shear tab or vertical stiffener can achieve satisfactory ductile behavior.

试体於钢梁塑性区腹板开孔，其塑性变形能力则有赖梁柱接头之补强，未补强之试体无法发展出足够之韧性，惟以剪力板或垂直加劲板补强之试体则可发展出令人满意的韧性行为。

In this thesis, overlying strata structure combined"voussoir beam"with"half arch"have been put forward for first time, and mechanism and control features of different forms of"half arch"structure and"S—R"stability for the voussoir beam are analysed.

本文在现场实测研究的基础上，采用相似模拟实验、有限元数值模拟和理论分析方法对综放采场上覆岩层的变形和破坏发展过程进行了系统深入的研究。

Incline rock-beam"the structure is always goes against after the working surface above main roof snaps forms along inclines the direction three-pinned arch, manifested "Voussoir beam" the structure basic characteristic, its scope was upward expansion "the balance - lost unceasingly steadily - balances again - loses again steadily the dynamic process.

倾斜岩梁"结构是由工作面上方的老顶破断后形成的沿倾斜方向的三铰拱，体现了"砌体梁"结构的基本特征，其范围是不断向上扩展的一个"平衡—失稳—再平衡—再失稳的动态过程。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。