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person:(yang, yang)
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person:(yang, yong)
•
person:(yang, jing)
A failure recognition device and movement adjustment mechanism
Shock absorption structure and automatic guide carrier loader
Bottom door monitoring equipment, system and method and railway wagon
Railway train and empty and load train adjusting device and method for electric braking system
Shunting system of power-distributed motor train unit and power-distributed motor train unit
Shunting system of power-distributed motor train unit and power-distributed motor train unit