In a magnetic disk unit, an arm on which magneticheads are mounted.
磁盘机中一种用于安装磁头的臂状部件。
2
Synthetic properties of these alloy are good, prime cost is lower, it may be applied to case of magneticheads of middle and low classes.
这些合金综合性能良好，成本较低，可用于中低档磁头的外壳。
3
Data can be crammed much tighter on a CD than on a magnetic floppy or hard drive because a laser beam can be focused to a much smaller point than magneticheads.