optical fit光学符合opticaladj.视觉的；光学的optical positive crystal正光学晶体optical signal detection光信号探测optical duobinary signal光双二进制信号optical computing system光计算系统optical fiber collimator光纤准直器optical fibre ion sensor光纤离子传感器Optical refractive index有限V型势阱optical laying equipment光学瞄准器optical pulse broadening光脉冲展宽optical fiber cystoscope光导纤维膀胱镜