BS ISO/IEC 30192:2021
信息技术 用于信息交换和存储的数字记录介质 120mm单层(每个磁盘25.00GB)和双层(每个磁盘50.0GB)BD可重写磁盘
Information technology. Digitally recorded media for information interchange and storage. 120 mm Single Layer (25,0 Gbytes per disk) and Dual Layer (50,0 Gbytes per disk) BD Rewritable disk