The deformation mechanism of rail height decrease was put forward by means of laboratory simulation.

通过试验室模拟，提出了轨高减少的变形机理。

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To install the crane span before installation, camber, level of metal structure of main girder bending, trolley rail height difference, gauge deviation, diagonal bridge survey.

安装前要对起重机安装跨度，金属结构主梁的拱度、水平旁弯，小车轨道高低差、轨距偏差，桥架对角线等进行测量。

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The contour size changes of rail before and after straightening, involving width of rail head, rail height and rail length, were measured. The causes of rail height decrease were analyzed.

测定了矫直前后钢轨外形尺寸变化(包括轨头宽度、轨高、钢轨长度)，分析了轨高减少的原因。

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The inquest heard the four-man crew used to relieve themselves over the side of the 58ft (17.7m) boat, which was built in 1974, and the bulwark and rail were lower than the recommended height.

BBC: An RNLI lifeboat

In Wisconsin, the outgoing governor Jim Doyle claimed over 4, 700 jobs directly related to the high-speed rail line between Milwaukee and Madison would have been realized at the height of construction.

CNN: High price derails some U.S. bullet trains