英语语法分析

Rakel is based on the international TETRA standard used to secure radio connections within and between critical public safety functions.

Rakel网基于国际TETRA标准，用于保护重要公共和内部之间的无线连接安全。

Rakel is a new nationwide radio system used by public safety agencies such as the police, rescue services, customs, Coast Guard and the Defense Forces.

Rakel网是一个新的全国性无线电通信系统，用于公共安全机构，例如警察、救援、海关、海岸警卫队和国防军。