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250km/h>线路允许速度Vmax≥350km/h正线上,根据《高速铁路无砟轨道线路修理规则》规定,线路轨道静态几何尺寸容许偏差管理值中,轨向(直线)的临时补修标准为()mm。

发布日期:2021-03-22

250km/h>线路允许速度Vmax≥350km/h正线上,根据《高速铁路无砟轨道线路修理规则》规定...

试题解析

线路

线路,英文可译为circuit,可指狭小如线的道路、传导电流的电线或者铁路道轨。

中文名
线路
外文名
line;route
拼音
xiàn lù
释义
狭小如线的道路

速度

物理学中用速度来表示物体运动的快慢和方向。速度在数值上等于物体运动的位移跟发生这段位移所用的时间的比值。速度的计算公式为v=Δx/Δt。国际单位制中速度的单位是米每秒。

中文名
速度
常用描述
大,小
矢量性
矢量
表示方式
v
外文名
velocity
计算公式
v=Δx/Δt
国际单位
ms
性质
具有矢量性、相对性、瞬时性,是描述质点运动的状态参量。

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