开发了一套以强磁性永磁体为驱动介质的行波磁场发生器，该装置具有使金属凝固组织微细化的作用。
An experimental set up of travelling magnetic field excited by supper power permanent magnet was designed, which has obviously refine function for metal solidification structure.
与其它数据存储介质(如硬盘驱动器和软盘驱动器)不同，CD上的文件系统并不是先创建后填充数据的。
Unlike other data storage media such as hard drives and floppy drives, a filesystem on CD is not first created, then populated with data.
链路层是指提供对物理层访问的设备驱动程序，这可以是各种介质，例如串口链路或以太网设备。
The link layer refers to the device drivers providing access to the physical layer, which could be numerous mediums, such as serial links or Ethernet devices.
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