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CD, Compact discs, ¤£ºÞ¤W­±©ñªº¬O­µ¼Ö (Audio), ¸ê®Æ (Data) ÁÙ¬O¨ä¥L¼v­µµø°T(Video), ³o¨Ç¸ê®Æ³£¬O¸g¹L¼Æ¦ì¤Æ³B²z, Åܦ¨0»P1, µM«á¦A¦s©ó CD ¥úºÐ¤ù¤W, ¨ä¹ïÀ³ªº´N¬OºÐ¤ù¤Wªº pits(¥WÂI)»P lands(¥­­±), ©Ò¦³ªº pits¦³µÛ¬Û¦Pªº²`«×»P¼e«×, ¦ý¬Oªø«×«o¤£¦P. ¤@­Ópits¤j¬ù¥u¦³¥b·L¦Ì¼e, ¤j·§µ¥©ó¤­¦Ê²É²B­ì¤lªºªø«×. ¤@¤ùCD¥úºÐ¤ù¤WÁ`¦@¦³¬ù 28 »õ­Ó pits. ¦b¦¹ÁÙ¦³¤@­Ó¼Æ¦rµ¹¤j®a°Ñ¦Ò, ¨º´N¬O¦b¥úºÐ¤ù¤WªºÁ³±Û­y¤j¬ù³ò¶¤¤¤ß2¸U°é. (¥H¦s©ñº¡74¤ÀÄÁ¬°¨Ò)·í CD ¥úºÐ¾÷¤Wªº¹p®g·Ó¦b¥úºÐ¤ù¤W®É,¦pªG¬O·Ó¦blands(¥­­±)¤W, ¨º·|¦³¬ù 70-80% ¤Ï®g¦^¨Ó, ³o¼Ë CDŪ¨úÀY¥i¶¶§QŪ¨ú¨ì¤Ï®g«H¸¹, ¦pªG¬O·Ó¦b(pits)¥WÂI¤W, «h³y¦¨¹p®g¥ú´²®g CD Ū¨úÀYµLªk±µ¦¬¨ì¤Ï®g°T¸¹, §Q¥Î³o¨âºØª¬ªp´N¥i¥H¸ÑŪ¬°¼Æ¦ì°T¸¹ (0 »P 1), ¶i¦ÓÂà´«¦¨­µ¼Ö (Audio) ©Î¸ê®Æ(Data).¤@¤ùCD¤ùªºª½®|¬O12¤½¤À, ¿@«×¬°1¤½Íù, ­«¶q¬°¥b¯s¥q, ²Õ¦¨³¡¥÷¥]¬A³Ì¿@ªº¦X¦¨¶ì½¦ (Polycarbonate) ¼h, ¥[¤W¤@¼hÁ¡Á¡ªº¾T (Aluminum), ÁÙ¦³¤@¼h«OÅ@º£¼h ( UV-Lacquer). [CD-Rªºª«²z¯S©Ê]

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