This paper discusses the necessity of applying Database System to Bridge CAD. The constitution and system architecture of bridge CAD based on core database system has been studied.

指出了在桥梁CAD中采用数据库技术的必要性，叙述了以核心数据库系统为支撑的桥梁CAD系统的组成和体系结构。

youdao

Two kinds of buffalos' frontal sinus are the thin-shell constitution as an arch bridge.

两种类型水牛额窦内部都呈拱桥式薄壳结构。

youdao

I, as your father, can decide on the park, the bridge, the city and the constitution.

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