High-speed switch High-speed rail passenger line switch is an important part of the structure, the structure and state of the safety of train operation, smooth and comfort of passengers is an important influence. Green building to meet passenger needs. From the beginning of June 2005. Ministry of Railways Organization industry...
High-speed switch High-speed rail passenger line switch is an important part of the structure, the structure and state of the safety of train operation, smooth and comfort of pas...
