电路交换 [通信] circuit switching ; CSD ; circuit-switched ; Circuittching
单式共电交换机 unitary common battery telephone exchanger
供电交换机 poe ; power supply switch
无线电交换台 [通信] radio exchange
公共交换电话网 public switched telephone network ; PSTN ; PSTN Public Telephone Switched Network ; Public Switch Telephone Net
无线电交换电报书信 radio telex letter
电信交换 telephone exchange ; centrala telefoniczna ; telefooncentrale
高速电路交换数据 High-Speed Circuit-Switched Data ; HSCSD
电话交换机 PBX ; telephone exchange ; PABX
网络电话交换机 IP PBX
在无线电噪声环境里，利用基于每秒1600跳跳频表的分组交换协议可以提高系统性能。
Uses packet switching protocol based on frequency hop scheme with 1600 hops/s to enable high performance in noisy radio environments .
本富兰克林和其他的人帮助证明了这些闪电式电荷交换的产物，但是，什么使电有这么大的威力？
Ben Franklin and others helped prove that such lightning was discharged electricity, but what generates that electricity in such prodigious quantities?
“承诺开关”悭电胆，并看到一个戏剧性地证明了你的交换机既影响当地和全球环境。
"Commit to switch" to CFLs and see a dramatic demonstration of how your switches impact both your local and the global environment.
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