手机在线观看黄色网址_成人午夜做爰视频免费看_精品一二三区久久aaa片_国产泡妞岁18xxxx免费看_色欲午夜无码久久久久久_国产原创视频在线

On December 16, skilled workers carried out profiling and fine grinding of track welding points between Panyu Square Station and Hengli station of Guangzhou metro line 18.

Guangzhou metro line 18, a key infrastructure construction project in Guangdong, Hong Kong and Macao Dawan District, which is implemented by the third company of China Railway 11th Bureau, needs to lay 122.6 kilometers of tracks. Guangzhou metro line 18 connects the downtown area of Guangzhou and Nansha Free Trade Zone, with a design maximum speed of 160 kilometers per hour.