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person:("zhou zhiyong")
Walking mechanism of fully-mechanized coal winning machine
Method for hoisting mountain land overhead pedestrian way
Lifting appliance track and posture control method of forklift loader, forklift loader and medium
Ground anchor device for gantry crane installation and construction method
Gravity self-adaption elevator for LED television production line
Engineering surveying and mapping device based on unmanned aerial vehicle
Elevator temperature and humidity detection device and system
Elevator human body state detection apparatus and system