wide-angle viewing device
广角观察装置

• galvanometer mirror
• galvanometer recorder
• galvanometer shunt
• galvanometer spot project
• gamma
• gamma camera
• gamma control
• gamma correction
• gammagraph
• gammagraphy
• gamma irradiation
• gamma radiography
• gamma ray
• gamma-ray astronomy
• gamma ray detector
• gamma-ray fluoroscope
• gamma-ray gauge
• gamma-ray hologram
• gamma ray image converter
• gamma-ray laser
• gamma-ray meter
• gamma-ray projector
• gamma-ray spectrograph
• gamma-ray spectromete
• gamma-space