areal density

基本解释

When combined, the cache capacity on the drive, the disk algorithms used, the interface speed, and the areal density, produce a disk transfer time.
驱动器上的缓存容量、所使用的硬盘算法、接口速度和磁录密度组合到一起，就构成了磁盘传输时间。
The capacity of magnetic disk systems is growing year by year with the advance of the information-oriented society, and the areal density of magnetic recording is increasing by 60% every year.
由于对信息存取容量的要求日益增加，磁性存储器件的存储密度正以每年60%的速度递增。
Through impact tests, the mechanics and the influence of areal density on penetration and anti-bullet properties of different fabric structures have been studied.
研究了不同背板材料的动态防护结构单元防破甲射流侵彻的抗弹效益，重点分析了背板材料性能对抗弹性能的影响关系。

The Spinpoint F4 features 7200rpm speed rotation, advanced areal density technology and a SATA 3.0 Gbps interface.
ENGADGET: Samsung's Spinpoint F4 320GB is fast and quiet, we think
While the growth in HDD areal density has declined in recent years the industry continues to make progress in designing and producing higher capacity HDDs.
FORBES: Is 4 Terabytes Enough?
Current HDDs ship with about 730 Gbpsi maximum areal density.
FORBES: Digital Storage, Our Only Hope