The secure, high-capacity, jam-resistant wireless (non-satellite) system connects users with both digital data and voice communications.

这种安全、高容量、抗阻塞的无线（非卫星）系统通过数字数据以及话音通信使战场用户互连。

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Secure Digital memory card. A flash based memory card designed to provide secure high capacity data storage.

安全电子存储卡。一种基于为提供安全的大容量数据存储功能而设计的闪存。

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