convex-plane cylindrical lens
平凸柱形透镜

• barretter
• barrier
• barrier cpacitance
• barrier filter
• barrier layer
• barrier-layer cell
• barrier-layer detector
• barrier penetration
• bar target
• bar-target contrast
• barye
• baryon
• baryta
• baryta flint
• baryta glass
• baryta light flint
• baryte
• baryton
• basal plane
• base
• base-altitude ratio
• base-apex line
• baseband
• baseband equalization
• Baseband Frequency Characteristics Evaluation Equipment