A high precision feed table and control system were developed to drive the optical head in a disc mastering device.
为实现母盘刻录机中光学头的精密进给，研制了精密微进给工作台及其伺服控制系统。
Objective To evaluate the feasibility and safety of lumbar disc discography carried out in an open MR scanner with an optical tracking system.
目的评价开放式MR扫描仪结合光学追踪系统行椎间盘造影术操作方法的可行性及安全性。
Introduces the issues on application of CCTV system based on the MPEG-4 compression, SDH optical transmission and large capacity hard disc storage technologies in urban rail transportation.
介绍了基于MPEG - 4压缩技术、SDH光纤传输技术和大容量硬盘存储技术的电视监控系统在城市轨道交通中的应用问题。
Magneto-optical disc system noise is analysed in the paper. Several methods for the improvement of signal-to-noise ratio are also summarized.
本文分析了磁光盘系统的噪声，综述了提高信噪比的几种方法。
Magneto-optical disc system noise is analysed in the paper. Several methods for the improvement of signal-to-noise ratio are also summarized.
本文分析了磁光盘系统的噪声，综述了提高信噪比的几种方法。
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