在拱桥式机架上面固定有发动机、与发动机相连的传动系统；

A wheel-type travel system is fixed below the arch-bridge-type stand;

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吊杆是中、下承式拱桥一种必备的构件。

Suspender is one of half-through and through bridge the necessary member.

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吊杆是中、下承式拱桥一种必备的构件。

Suspender is one of half-through and through bridge the necessary member.

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