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11. | ideal communication system |
| 理想通信系统 |
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12. | multichannel communication system |
| 多信道通信系统 |
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13. | microwave communication system |
| 微波通信系统 |
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14. | firemens communication system |
| 消防员通讯系统 |
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15. | main communication system |
| 主通信系统 |
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16. | intersystem communication system |
| 系统间通信系统 |
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17. | maritime communication system |
| 海事通讯系统 |
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18. | extensive communication system |
| 延长扩展通信系统 |
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19. | information communication system |
| 信息通信系统 |
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20. | PCM communication system |
| 脉码调制通信系统 |
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