scale
(1)标度
(2)比例尺
(3)刻度尺
(4)刻度盘

• bichromate
• bicirculation
• bicolorimeter
• biconcave
• biconcave lens
• biconial reflector
• biconic connector
• biconvex
• biconvex lens
• bicrystal
• bicylinder lens
• bi-directional
• Bidirectional Reflectance-Distribution Function
• biellipticity
• bifilar micrometer
• biflector square
• bifocal
• bifocal lens
• bifocal spectacle
• bifocus
• bifurcation
• bifurcation point
• bifurcator
• big close-up
• bi-harmonic