The local stress in the box beam is caused by the wheel pressure of the trolley conveyed along the track onto the upper flange and the web of the beam.

起重机小车轮压经轨道传给箱形主梁上盖板和腹板，使之产生局部应力。

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Now we also produce Wheel Barrow, Tool Cart, Service Cart, Hand Trolley and their parts and components.

同时我们还生产手推车、工具车、服务车、货仓车及其零部件。

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Abstract: the trolley wheel of some kind of gantry crane appeared the phenomenon of slanting. After several years' usage.

摘要：一种轨道式龙门起重机由于多年运行，其小车轮频繁出现走偏现象。

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Your steering wheel works, so you can turn the trolley car, if you want to, onto the side track killing the one but sparing the five.

而你的方向盘还没坏，只要你想，就可以把电车转到侧轨上去,牺牲一人挽救五人性命。

耶鲁公开课 - 公正课程节选

Asda's efforts to open its first store in the Highlands has been like trying to push a shopping trolley with a wonky wheel in a straight line.

BBC: Shopping baskets at dawn in the Highlands