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Airship strength detection device and use method thereof
Sliding device for amphibious aircraft and using method of sliding device
Engine oil cooling and filtering integrated device for light amphibious aircraft engine
Self-adaptive impedance matching circuit design method of wireless rechargeable car
Seawater sampling system and scientific investigation ship
Protection device for preventing oil mist pollution and ship
Transfer hanging piece used in automatic shell making line
Air release unit for ship, ship and control method of ship
Measuring tool and installation method of scientific investigation fin track
Abrasion test device for aircraft control connecting rod