地铁设计：近年来城市轨道交通行业逐步从高速发展转向高质量发展阶段

Group 1 - The urban rail transit industry is transitioning from rapid development to a phase of high-quality development [2] - The approval process for rail transit construction plans has slowed down, which imposes higher requirements on related enterprises [2] - This shift is beneficial for the industry's standardized, orderly, and sustainable development [2]