Ukuhlelwa kweentambo ze-optical.
1. Ngokomsebenzi wothumelo ohlukeneyo, umgama kunye nenjongo, iintambo ze-optical zinokwahlulwa zibe yi-user optical cables, i-local optical cables, i-long-distance optical cables kunye ne-submarine optical cables. 2. Ngokweentlobo ze...
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