centeral row of reflexions
中央反射线

• Boltzmann constant
• Boltzmann distribution law
• Boltzmann factor
• Boltzmann principle
• bombardment
• bomb sight
• bombsight
• bond
• bondage
• bonding
• bonding force
• bonding layer
• bonding orbital
• bone glass
• Bonr's constant
• Boolean algebra
• boom
• booster
• booster-diffusion pump
• booster vapour pump
• boot
• booth
• bootstrap
• bootstrap amplifier
• bootstrap mode