high altitude observatory
(1)高空观察站
(2)高空天文台

• Bragg angle
• Bragg-Brentano parafocusing system
• Bragg condition
• Bragg coupling efficiency
• Bragg deflector
• Bragg diffraction
• Bragg effect
• Bragg-effect hologram
• Bragg electrostriction
• Bragg equation
• Bragg maximum
• Bragg method of crystal analysis
• Bragg modulator
• Bragg plane
• Bragg Reflector
• Bragg regime
• Bragg scattering
• Bragg's law
• Bragg spectrometer
• Bragg-William's theory
• brain
• brake
• brake cross lever
• brake shoe
• braking radiation