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1片 CD—ROM直径为 120mm,厚度12mm,重量 0.1 5kg。在聚碳酸醋基本上镀有’12mm厚的铝反射层。最大存储容量675兆字节,相当 30万页印刷品微机 1800张软盘的容量。 (本刊资料)CD—ROM的小知识
One CD-ROM is 120mm in diameter, 12mm in thickness and weighs 0.1 5kg. The polycarbonate is basically coated with a 12 mm thick aluminum reflector. The maximum storage capacity of 675 megabytes, the equivalent of 300,000 pages printed computer 1800 floppy disk capacity. (Information) CD-ROM’s little knowledge