At that time, it was discovered that the level of the track at the northeast corner may cause noise, so adjust the leveling of the track at the northeast corner to reduce the noise.
At that time, it was found that the track leveling in the northeast corner might cause noise, so the track leveling in the northeast corner was adjusted to reduce the noise<br>
At that time, it was found that flat water on the track in the northeast corner could cause noise, so adjust the northeast corner track leveling to reduce the noise