ring discharge ion laser
环状放电离子激光器

• basic roughness
• basic stimulus
• basis
• basis matrix
• batch
• batch sampling
• Bates wave-front shearing interferometer
• bath
• bathochromic shift
• bathometer
• bathymeter
• bathymetric map
• bathyphotometer
• batter level
• battery
• battery chamber
• battery check lamp
• battery commander's telescope
• battery compartment
• battery lamp
• battery-powered
• battlefield laser rangefinder
• baud
• baume
• Baume scale