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31. | telegraph communication system |
| 电报通信系统 |
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32. | photoelectric communication system |
| 光电通讯系统 |
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33. | pulse communication system |
| 脉冲通信系统 |
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34. | scatter communication system |
| 散射通信系统 |
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35. | mobile communication system |
| 移动通信系统 |
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36. | telex communication system |
| 用户电报通信系统 |
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37. | tactical communication system |
| 战术通信系统 |
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38. | shipboard communication system |
| 船载通信系统 |
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39. | strategic communication system |
| 战略通信系统 |
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40. | integrated communication system |
| 综合通信系统 |
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