Helicopters of the PLA perform aerobatic maneuvers on Sept 15 during a flight show at the first China Helicopter Exposition, which runs from Sept 15 to Sept 18 in North China's Tianjin municipality. [Photo/Xinhua] |
Helicopters of the PLA perform aerobatic maneuvers on Sept 15 during a flight show at the first China Helicopter Exposition, which runs from Sept 15 to Sept 18 in North China's Tianjin municipality. [Photo/Xinhua] |