General bridge crane lifting trolley generally, Bridges run organization, structure and composition of metal bridge.

普通桥式起重机一般由起重小车、架桥运行机构、桥架金属结构组成。

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General bridge crane lifting trolley generally, Bridges run organization, structure and composition of metal bridge.

普通桥式起重机一般由起重小车、架桥运行机构、桥架金属结构组成。

youdao