deflectable laser beam
可偏转激光束

• glow lamp
• glow modulator tube
• glow plasma
• glue line heating
• gluing
• glyceriin-immerision system
• gobo
• go-gauge
• goggles
• Golay cell
• gold
• goldberg wedge
• gold blackbody
• gold-doped
• gold flaser
• gold foil
• gold leaf electroscope
• gon
• gonimeter eyepiece
• goniometer
• goniometer eyepiece
• goniometry
• goniophotometer
• goniophotometric curve
• gonioradiometer