桁

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。

Here, the dual nonlinear tangental stiffness matrixes of binodal spatial beam element and triangular plate/shell element of 6 nodal DOF to Update\|Lagrange coordinate systems are derived, the incremental equation of virtual work is linearized to simplified calculation,beam\|plate coupling,deviation of principal nodes and subordinated no...

推导了三维桁元、梁元和三角形板壳元在UL描述下的双重非线性切线刚度矩阵，通过对增量形式虚功方程作线性化处理来减少计算量，考虑了梁／杆与板对应节点定位偏差和节点焊接安装误差，进而编制计算程序。

It leaves outward selects, may pick up the most outer layer clothes rack wing celtis certain distance, enables the building to leave the eave to be profounder, the shape is more exquisite magnificently.

它向外出挑，可把最外层的桁檀挑出一定距离，使建筑物出檐更加深远，造形更加优美、壮观。

It is reported that in Quanzhou City, all of Joisting shrimp net operation are banned in summer.

据悉，今年泉州禁止所有桁杆虾拖作业渔船在伏季休渔期间从事生产。

Correct makes the law forms the good personal hygiene habit, sufficient sleep, attendance in exercise, reduced pressure, enough nutrition; The attendance washes the hands, after particularly has contacted the public goods, must wash the hands first touches own eye, the nose and the mouth again; Sneezes and cough time should use the paper goods to cover the oronasal; The indoor maintains ventilates and so on..

众所周知，人类感染后的类型A型H1N1禽流感的症状和感冒相似，患者会出现发烧，咳嗽，疲劳，有食欲不振等在预防方面，许蕤桁认为，现阶段没有必要挤在一起vaccinates流感疫苗的人，因为防止季节性流感疫苗，以防止型A型H1N1禽流感，而不是有效果正确的法律形式作出的良好个人卫生习惯，充足的睡眠，参加行使，减少压力，足够的营养；出席冲洗手后，特别是已与公共物品，必须先清洗双手触及自己的眼睛，鼻子和口再次；打喷嚏和咳嗽时应该使用文件的货物，以支付口鼻；室内保持通风等等如果我们用正确的方法预防它，它就不会那么可怕这里有一些为你的建议：首先，当你在咳嗽或者打喷嚏的时候，你应该用手捂着嘴然后你最好尽可能的离公共场所远一点严重强迫症的治疗，如果你必须去，请戴上口罩饭前仔细洗手，经常打开窗后这样使空气保持清新最后你应该做更多的运动去使你身体更强壮，这样你就可以保持健康了我认为这才是最重要的

The 20 metre boom in Sitka spruce was made in Viareggio.

亨利。斯宾塞根据1926年游艇航行性能最佳年代的数据重建了桅杆（道格拉斯冷杉，两部分，52米长）、固定索具和滑轮。20米长Sitka云杉下桁在维亚雷焦建造。

It is also possible to develop a concrete trussed tube design.

它也有可能建立一个具体的桁架式管design。

The quality control of double-deck large-tonnage trussed beam installation is also one of the major difficulties of the project.

双层大吨位桁车梁的安装质量控制也是本工程的重难点之一。

In this paper a space analysis method for built-up system of arch trussed beam has been proposed.

针对拱桁梁组合体系桥梁，本文提出一种空间计算方法。

Compared with the result of the soild model, it is found that the two results have great coherence. So it is feasible to take the shell model for numerical analysis of trussed combination arch bridge.

论文最后建立了清水大桥板壳有限元模型并利用该模型对该桥的恒载作用工况进行了数值分析，通过与实体模型的结果对比发现，两种模型的计算结果具有比较好的一致性，因此可以利用板壳模型对预应力桁式组合拱桥进行快速、准确的数值分析。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。