1·If the objective lens is closer to the compact disk than the focal length of the object lens then the cylindrical lens creates an elliptical image on the photodetector array.
如果物镜与光盘之间的距离短于物镜的焦距，柱面透镜就会使在光电探测器阵列上的成像变成椭圆影像。
2·If the objective lens is closer to the compact disk than the focal length of the object lens, then the cylindrical lens creates an elliptical image on the photodetector array.
如果物镜与光盘之间的距离短于物镜的焦距，柱面透镜就会使在光电探测器阵列上的成像变成椭圆影像。
3·The compact disk player which carries a digital input.
该光盘播放器，带有数字输入。
4·This paper introduced the method of the discarded compact disk and polyester which was recycled at home and abroad.
介绍了国内外对废光盘、废聚酯的回收再利用方法。