double span 双跨
double span moorings 双跨底链的系船浮筒
double span mooring 双跨系船设施
double span trussed roof structure 双跨屋架结构
double span vane 导向叶片二片组
double span beam 双步梁
double span bent 双跨排架
double span tunnel 双跨隧道
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。
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。
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