查询词典 lattice beam

Compared with that the beam splitter is based on multimode waveguide of triangular lattice PBG with the same parameter,the beam splitter in this paper has much shorter size and higher output efficiency.

因而本文所设计的分束器具有更小的器件尺寸和更高的传输效率，易于大规模集成的实现，在未来的集成光路中具有广泛的应用价值。

In chapter 3 of this work, we made some improvement on the base of original work and proposed a double exposure multi-beam interference method to fabricate a hexagonal lattice with irregular columns.

在以前的工作中，我们曾使用衍射分束器件得到三束呈伞状对称的光束相互干涉，制备出了对TE和TM两种模式同时具有较大带隙的二维三角结构光子晶体。

A feed comes in a set length and is lighter than a lattice or steel beam type of mast.

填料时间很长，比网格梁或钢梁型的桅杆更轻。

It is composed of anchor-rope and lattice beam. This complex structure can utilize the latent energy of soil and rock mass, and generate powerful supporting action. Because of its simple structure and light self-weight as well as saving in materials, it has better economic technical value.

该结构由锚索和格构梁共同组成，这种复合结构能充分挖掘岩土体的自身潜力，并产生强大的支护作用，加之其结构简单，自重较轻，节省材料，有良好的经济技术价值。

The complex structure of prestressed anchor-rope and lattice beam is a kind of active protective system which is wild used on slope protection as well as landslide disposing at recent years.

预应力锚索格构梁复合结构是一种近年来广泛用于边坡支挡和滑坡治理等方面的主动防护体系。

Through comparing the calculated values with experimented results, the research result indicates that the actual situation of the lattice beam can be well reflected by using two stages Moreover, the simplified foundation pressure is of benefit to the hand labor calculation.

通过对比分析理论计算最大值、采用简化的地基反力计算值和实测值，结果表明采用两阶段设计能较好地反应格构梁的实际受力情况，且设计安全，而简化的地基反力为手工计算带来了方便。

So we can analyse the stability of lattice structure as solid web beam without change its geometry dimension. The out-of-plane stability of bending beam, which is made up with 2 beams and loaded by non-directional force, is studied.

对两节梁组成的弯曲梁在非保向力作用下的平面外失稳问题进行了研究，通过建立每节梁临界状态下弯曲和扭转变形微分方程，根据杆件变形的边界条件以及杆件之间的变形协调关系，得出了一端固定一端悬臂的弯曲梁在非保向力作用下平面外失稳的特征方程。

On the basis of stability analysis, the author takes the K27+825 slope from the type of slope which has lest stability as an example. According to its basic feature, the design ueses the choosed best reinforce and control scheme: lattice beam, anchor wire, grouting and abstraction of water. In the course of design, the author takes into account not only reasonable optimize of whole control plan but also local measure such as whether the unstable block will shear from vnlnerable sections when control plan is laid out concretely, in order to reach the goal of reasonable design and effective control.

在稳定性分析的基础上，以边坡稳定性最差的一类中的K27+825边坡为例，结合其自身的特点，用优选出的加固防治方案：框架梁+锚索斗灌浆+排水进行设计，设计中既考虑总体防治方案的合理优化，又充分考虑了加固工程的具体布置时是否存在不稳定体从锚索或框架梁的薄弱部位剪出的可能性等一些细部措施，以达到合理设计，有效及经济治理的目的。

In combination with the crushed rock slope as an example, the allocation of an anchorage force on longitudinal beams and transverse beams is calculated by adopting the distribution coefficient law of the nodal form at first. Then the internal forces of the lattice beam are calculated respectively through the software on the basis of Winkler elastic foundation model and the semi-infinite foundation model, and then compared with the internal forces which are based on simplified foundation pressure calculation. The active pressure of rock is calculated approximately by Ranking soil pressure theory in the working stage. Sequentially, the reinforcing bars are disposed by two-stage's averagely calculated values.

以破碎岩质边坡为例，采用节点荷载分配法计算了锚索锚固力在格构梁纵、横梁之间的分配比率，然后基于Winkler弹性地基模型和弹性半空间地基模型分别计算格构梁在张拉阶段的内力，并与采用简化的地基反力计算值对比；采用朗肯土压力理论近似计算在工作阶段主动岩体压力，将地梁视为在线性分布力作用下倒置于坡面上的连续梁，按力矩分配法计算地梁内力，取两阶段计算平均值进行配筋。

Finally, the free vibration analysis of the 3-D beamlike lattice girders is performed using the derived property matrices of the 3-D Timoshenko beam elements and the influence of flexural rigidity, shear deformation and rotary inertia of the constituent structural members on the free vibration characteristics of the "triangular-type" and "rectangular-type" 3-D beamlike (Vierendeel and X-braced) lattice girders is studied.

最后，本文利用上述三维Timoshenko梁元素的性质矩阵，来进行三维构架的自由振动分析，并探讨各梁元素的挠曲刚度、剪切变形与旋转惯性，对三角形及四方形的梁形格状桁，自由振动特性的影响。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。