In excavation of double span tunnel, there exists a big water-eroded groove. The method of elastic foundation beam is used to cope with the situation.
双跨隧道在岩溶地区施工中遇到大型溶槽，采用弹性地基梁法成功跨越。
We stopped at London Bridge, a double-arched formation whose outer span collapsed in 1990, stranding a couple on the other side so that they had to be rescued by helicopter.
我们在伦敦桥停下车来，这是一座双拱桥梁，外延部分在1990年垮塌了。 当时有一对男女被困在桥那一边，只能由直升飞机前来救援。
It is to be square-a span long and a span wide-and folded double.
这胸牌要四方的，叠为两层，长一虎口，宽一虎口。
FIG. 12 illustrates a timber double post roof truss. This type of truss is constructed where a wider span or a less restricted roof space is required.
图12所示为一个双柱木屋顶桁架。这种桁架主要建于跨度要求较大或屋顶空间限制较少的地方。
Based on tests of two full-scale double-span prestressed frames, internal force redistribution of frame was studied and continuity of structures and axial compression ratio of column were analyzed.
基于两榀接近足尺的后张有粘结预应力混凝土框架的试验，对多跨预应力框架的内力重分布进行了研究，重点考虑了框架的连续性和轴压比的影响。
Its net reproductive rate, the intrinsic rate of increase and the increment rate per unit were high, but its generation span and the time of double population size were low.
种群的净增殖率、内禀增长率及周限增长率较高，而种群的世代周期及加倍时间偏低；
Reticulated steel shell of Beijing Olympic Bicycle Stadium is at present the largest span double-layer spherical reticulated shell in China.
北京奥运会自行车馆钢网壳是目前我国最大跨度的双层球面网壳结构。
Until now the bridge is the longest span in the continuous rigid frame double line railway bridge in our country.
该桥是目前我国最大跨度的预应力混凝土连续刚构铁路双线桥。
Since the nine-span double open neutral section is unable to satisfy the requirements of the 6th raising of speed in large scale, so the reconstruction of it is needed.
既有九跨式双断口电分相因不能满足第6次铁路大提速要求而需对其进行改造。
The double-decker plane has a wing span wider than a football field and hold more than 500 passengers.
这架双层飞机的机展比一个足球场还宽，可载客五百余人。
According to measuring the coordinates of each span of long span double arched bridge, the arch axis for every span is determined.
通过测量拱腹各点坐标来确定双曲拱桥每孔的拱轴线。
The gait-model bridge girder erection machine mainly applied to the erection of long-span, large-tonnage and double amplitude bridge deck concrete full-span box girders.
本架桥机主要应用于大跨度、大吨位、双幅桥梁架设中混凝土整孔箱梁的架设。
The main bridge of Sanmenjiang Bridge in Liuzhou is a 3-span partial cable-stayed prestressed concrete box beam bridge with two pylons and double cable planes.
柳州三门江大桥主桥为双塔、双索面、三跨部分斜拉预应力混凝土箱梁桥。
A 3-d model of 2-span double continuous composite beam was established by using ANSYS software to validate the accuracy of this method.
用有限元软件ANSYS建立2跨双层连续组合梁的空间模型对该方法的准确性进行验证。
A 3-d model of 2-span double continuous composite beam was established by using ANSYS software to validate the accuracy of this method.
用有限元软件ANSYS建立2跨双层连续组合梁的空间模型对该方法的准确性进行验证。
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