airborne gaseous laser
机载气体激光器

• Haidinger rings
• Haidinger's brush
• Haidlinger brush
• hair
• hair hygrometer
• hairline
• vector potential
• vector product
• vector quantity
• vector space
• vector triangle
• vector wave
• V edge protractor
• Vee-belt
• Vee-belt sheave
• Vee block
• Vee-grooved guide
• Vee-grooved pulley
• Vee pulley
• Vee-thread
• Vee value
• Vee way
• vehicle
• veil
• vein