Subsequently, the effects of subgrade freeze-thaw condition, running speed and width of rail gap on the vibratory load from trains were investigated.

据此，研究了北麓河试验段路基冻融状态、列车行驶速度、轨缝宽度对路基列车行驶振动荷载的影响。

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On most of the lines, there are protective doors on the platform to prevent people from falling onto the rail, and the gap between platform and train is only about 15 centimeters or less.

大部分线路的站台上都有防护门，防止乘客坠落，站台与列车之间的缝隙不到15厘米。

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It is not just crime. Brazil's rail, road and airport facilities require daunting investment. The vast gap between rich and poor is immediately evident.

犯罪不是唯一的问题。巴西的铁路、公路、机场设施均需要惊人的资金。贫富之间的巨大差距一目了然。

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Network Rail said the driver noticed the gap as he passed it on an adjacent track.

BBC: York railway line gap risked tragedy - RMT

Caps seven points gap was helped by second-placed Rail Stars only managing a draw at home.

BBC: Morocco's Raja Casablanca

"Personally look at the bed and see if by pushing the mattress to the far side of the bed they can make a gap that is big enough to put four fingers between that and the rail, " he advises.

NPR: Bedrails Can Cause Deaths in Frail, Elderly