Willian Hershel telescope
威廉赫谢耳望远镜

• autofocus rectifier
• autofocus system
• autofocus (X-ray)tube
• autoformer
• autograph
• autogravure
• autoheterodyne
• autoionization
• autoionization spectrometer
• autoionized energy level
• autoionizing
• autoionizing-like resonance
• autokeyer
• Autoluminescence
• auto/manual flash selector
• automat
• automatic
• automatic acquisition
• automatic aperture control device
• automatic brightness control
• automatic centring
• automatic check
• automatic chrominance control
• automatic colour compensation
• flash meter