stationary self-focusing
稳态自聚焦过程

• Bidirectional Reflectance-Distribution Function
• biellipticity
• bifilar micrometer
• biflector square
• bifocal
• bifocal lens
• bifocal spectacle
• bifocus
• bifurcation
• bifurcation point
• bifurcator
• big close-up
• bi-harmonic
• bilateral
• bilaterally adjustable
• bilateral scanning
• bilateral switching
• bilateral transducer
• bilinear
• bilinearity
• bilinear transformation anslysis
• Billet split lens
• billet split lens
• billi
• twilight efficiency