The second stage involves an 8-group EMU. In the first repair cycle, half of the trains (5~8 cars) are replaced with LM profiles, and the grinding material and working mode remain unchanged.
The second stage involves an 8-group train set, the first 镟 repair cycle in the half of the train (5 to 8 cars) replaced with LM-shaped surface, grinder material and working mode unchanged,
In the second stage, an 8-car EMU is involved. In the first turning cycle, half of the trains (5-8 cars) are replaced with LM profile, and the grinding sub material and working mode remain unchanged,<br>