They floored the bridge with concrete plates.
他们用混凝土板铺桥面。
The bridge can be of many different structures, a common one of which is using the concrete support of the pit as its girder and cast-in-situ reinforcement concrete plates as its decks.
栈桥可以有多种结构形式，较为常见的一种是以基坑的混凝土支撑为主梁，以现浇混凝土板为桥面板的栈桥。
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