Opticaldisk holds much more, data than many magnetic disks.
光盘能够存储比磁盘多得多的数据。
2
This paper is concerned with the principle of a non - contact optical instrument for measuring the surface roughness of a magneticdisk with an opto-heterodyne interferometer.
根据外差干涉计量术的原理，研制了非接触式的光外差干涉磁盘表面粗糙度测量仪。
3
(computer science) computer hardware that holds and spins a magnetic or opticaldisk and reads and writes information on it.