The height of each hand rail shall be 1.1 m. The structure and materials shall be according to the above mentioned standards.
栏杆的高度应该是1.1米。栏杆的结构和材料需要按照以上提到的标准安装。
The height of each hand rail shall be 1.1 m. The structure and materials shall be according to the above mentioned standards.
栏杆的高度应该是1.1米。栏杆的结构和材料需要按照以上提到的标准安装。
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