| 释义 |
光学投影 guāng xué tóu yǐng optical projection 光学投影比较仪 optical projection comparator; projection comparator; 光学投影磨床 optical projection grinder; 光学投影曝光 optical projection printing; 光学投影系统 optical projection system; 光学投影显示器 optical projected display; 光学投影仪 optical projector光学投影optical projection |