在各方努力下,因施工事故而“断了一截”的上海轨交4号线,终于从“C”字形变成“O”字形。这条曾让上海人心里五味杂陈的轨道交通线路,恢复了本来面目。终点又回到起点,但并不是简单重复。4号线修复的过程,是科学决策的过程,是科技创新的过程。决策力、创新力形成了巨大的战斗 With the efforts of all parties, Shanghai Rail Transit Line 4, which was “cut off” due to construction accidents, finally changed from the “C” shape to the “O” shape. This article has let Shanghai people heartache mixed rail transit lines, restored the true colors. The end is back to the starting point, but it is not a simple repetition. Line 4 repair process is a scientific decision-making process is the process of technological innovation. Decision-making, innovation has formed a huge battle