48F+41R load gear shifting tractor gearbox with crawling gear
Cover-lifting interlocking type toilet bowl used in high-pressure closed environment
Connector device for replenishing gas and liquid on orbit
Automobile brake and accelerator integrated equipment
Peacetime and war time integrated camping troop crawler with temporary carriage heightening function
Hopper car capable of unloading on one side or two sides outside track
Deformation-resisting supporting device for railway flatcar open type draft sill