茂名人行道护栏 1米2蓝白色护栏 肇庆定制广告牌围栏

Maoming sidewalk guardrail 1 m2 blue white guardrail Zhaoqing custom billboard fence

但由于路面实际标高与设计标高之间存在误差，而且误差较大。

However, there is an error between the actual elevation and the design elevation, and the error is large.

所以会出现一行立柱距路缘石顶面高度不一致的现象。

Therefore, the height of a row of columns from the top of curb is inconsistent.

我们在郑州至新郑高速公路上施工时有这样放线的路段。

We have such setting out sections in the construction of Zhengzhou Xinzheng expressway.