The sub-micron circular features of Compact Disc, VideoDisc and Optical Disc are usually produced by laser cutting machine .
声盘、视盘及光盘的亚微米圆弧线一般通过激光刻录机光刻制造。
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Another big improvement of DVD video storage is its 525-line resolution, which is far greater than the resolution offered by laserdisc media and almost twice the resolution of standard VHS videotape.