... cellular steam seal 蜂窝式汽封 cellular wireless communication networks 蜂窝无线通信网络 cellulase 纤维素酶 ...
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The cellular digital packet data(CDPD) system is a wireless packet communication system based on analog cellular telephone networks.
蜂窝数字分组数据（CDPD）系统是基于模拟蜂窝电话网的无线分组数据通信系统。
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