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- optical sound lamp 光录音灯
- Sound Head: The optical sound reproducer mounted beneath the projector head but above the take-up reel support arm or magazine. 声头、音头：安装在放映机头下、卷轴支撑臂或片匣上面的光学声音重现装置。
- Sound Gate: The gate used in an optical sound head, instead of a sound drum, to keep the film sound track precisely aligned on the scanning beam slit during sound reproduction. 声门：光学声音头上用的片门，代替声鼓，使得胶片的声轨在声音重现过程中正好和扫描狭缝光束精确地排列成一直线。
- variable-hue optical sound recording 变色光学录声
- mechanical optical sound recording 机械光学录音
- variable-area optical sound recording 变积式光学录音
- His optic nerve was hurt in an accident. 他的视神经在一次事故中受到损伤。
- Microscopes and telescopes are optical instruments. 望远镜和显微镜是光学仪器。
- The optic theory originated with Einstein. 光学理论是爱因斯坦首创的。
- A mirage is an optical illusion. 海市蜃楼是一种视错觉。
- The "chimney effect"of open lamp can remove the optical impurities. 敞开式灯具的“烟窗”效应，排除光学杂质。
- A system of optical components that magnifies. 能起放大作用的一组光学元件
- Showing no optical activity in polarized light. 无旋光的极化光下无光学反应的
- The optical system of the eye stimulate cell of the retina. 眼睛的视觉系统刺激视网膜内的细胞。
- I thought I saw a ghost but it was just an optical illusion. 我以为我看见鬼了，其实只是一种幻觉。
- They concentrated on better definition of the optical image. 他们致力于提高该光学影像的鲜明度。
- The optical system of the eye stimulates cells of the retina. 眼睛的视觉系统刺激视网膜内的细胞。
- Light stimulates the optic nerve. 光刺激视神经。
- One that sells lenses, eyeglasses, and other optical instruments. 眼镜商，光学仪器商出售光学仪器、眼镜或其它光学仪器的人
- A light-sensitive unit used with an optical arrangement for scanning images. 与光学装置一起用来扫描图象的一种光敏装置。
