The desert lining the Pacific coast of South America is a bright white strip in the lower center of the globe.
南美洲太平洋海岸沿线的沙漠在地图中部偏下方呈亮白色。
2
This paper expounds the performance features of W-shape steel strip, and introduces the reinforcement technique adopted in the case that the lining thickness of railway tunnel is insufficient.
阐述了W型钢带的性能特点，介绍了W型钢带在铁路隧道衬砌厚度不足情况下的补强加固技术。
3
Afterwards, the influence of the construction loads on segments lining is discussed, including the cracks, partial breakage, sealing strip falling, segments leakage, and segments dislocation.