欧美a片操逼视频,女人看的av播放,粉嫩精品国产色综合久久不8,日本不卡一区二区三区在线,6080yy电影在线看一级a,翘臀美女xx00后进式在线观看,日韩精品三级免费在看在线观看

發(fā)布時間:[2018-2-11 17:21:38]    瀏覽量:5920次
Product uses: this car is used for ballasted track continuously replacing rail and / or sleeper, improving line stability.

Features: 1. Computer control system is adopted to realize old pillow pickup, new pillow laying and curve copying automatic control, with high accuracy. 2, it can operate in special sections such as bridges and tunnels. The operation efficiency is high, energy consumption is low, and economic benefits are good.

Product overview

Effect:

This car is used for ballasted track continuously replacing rail and / or sleeper to improve line stability.

Characteristic:

1, adopt computer control system to realize automatic control of old pillow pickup, new pillow laying and curve copying, with high accuracy.

2, it can operate in special sections such as bridges and tunnels. The operation efficiency is high, energy consumption is low, and economic benefits are good.