The logo represents a portal - a protectiveframe shaped by a natural landscape curve.
这一商标象征了一个入口—自然美景线条映衬下的一个保护性框架。
2
External spiral escape stairs are made of steel and for safety reasons around the ladder there is a steel frame and the protective mesh.
而外凸的旋转疏散楼梯采用钢制结构，为了安全起见，阶梯被一圈钢制框架包裹。
3
A distributing frame carrying on one side all outside lines, and on the other side the terminations of the central office equipment and protective devices for them.