A hologram memory with high quality and high informationstoragedensity for analog information such as characters, lines and portraits has been made by sampling mesh and random phase shifter method.
用采样及随机相移器法实现了对文字、线条、人象等多种模拟信息的高密度，高质量的全息存贮。
2
The storagedensity of a disk medium; storing four times the amount of information per disk as single density.
磁盘介质的存储密度，在这种密度下磁盘的信息存储量是单密度盘的四倍。
3
It is apparently important to develop high densitystorage of information because of its explosively increase.