本文介绍了世界上正在研究和开发的数字全息数据存储技术。

This article presents the digital holographic data storage technology now under development in some countries.

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由于数字全息图的数据量庞大，其传输、存储占用大量的通信带宽和存储空间。

Large amounts of communication bandwidth and memory space is occupied to transmit and store digital hologram on account of its enormous data volume.

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