1. Piston-engined aircraft and turboprops have air compressors to maintain cabin pressure.
活塞发动机和涡桨发动机的飞机有压气机来控制客舱的压强。
1. Cessna is a leading designer and manufacturer of light and midsize business jets, utility turboprops and single engine aircraft.
2. Deccan Aviation is selling new shares to the buyout firms to raise cash for buying turboprops and Airbus jets.