本国际标准规定了120mm的机械、物理和光学特性 容量为3.0 GB和6.0 GB的可重写光盘。它规定了记录和记录的数据的质量 未记录信号、数据格式和记录方法，从而允许信息交换 通过这种磁盘。使用相变技术可以多次写入、读取和覆盖数据 方法这些磁盘被标识为+RW。 本国际标准规定: _两种相关但不同的磁盘类型（见第7条）， _合规的条件， _测试、操作和存储磁盘的环境， _磁盘的机械、物理和尺寸特征，以便提供机械交换 在数据处理系统之间， _磁盘上信息的格式，包括磁道和扇区的物理配置、错误 纠错码和编码方法， _记录在磁盘上的信号的特征，从而使数据处理系统能够读取数据 从磁盘上。 本国际标准规定了光盘驱动器之间的磁盘交换。连同 作为卷和文件结构的标准，它提供了数据处理系统之间的完整数据交换。

This International Standard specifies the mechanical, physical and optical characteristics of 120 mm rewritable optical disks with capacities of 3,0 Gbytes and 6,0 Gbytes. It specifies the quality of the recorded and unrecorded signals, the format of the data and the recording method, thereby allowing for information interchange by means of such disks. The data can be written, read and overwritten many times using the phase change method. These disks are identified as +RW. This International Standard specifies _ two related but different Types of this disk (see clause 7), _ the conditions for conformance, _ the environments in which the disk is to be tested, operated and stored, _ the mechanical, physical and dimensional characteristics of the disk, so as to provide mechanical interchange between data processing systems, _ the format of the information on the disk, including the physical disposition of the tracks and sectors, the error correcting codes and the coding method, _ the characteristics of the signals recorded on the disk, thus enabling data processing systems to read the data from the disk. This International Standard provides for the interchange of disks between optical disk drives. Together with a standard for volume and file structure, it provides for full data interchange between data processing systems.