... 桥面系 floor system 端横梁 end floor beam 起重横梁 jacking floor beam ...
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end fent floor beam 端横梁
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The extension is spliced to the trolley beam at one end, and is supported by a floor-standing posts at the other end.
在吊车横梁的一端有扩展来加固，由另一端的地轴架来支撑。
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