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关注：1
2013-05-23 12:21
求翻译：闭路电视、程控电话交换机及消防安全系统是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
闭路电视、程控电话交换机及消防安全系统
问题补充： |
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2013-05-23 12:21:38
Closed-circuit television, program-controlled telephone switches, and fire safety systems
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2013-05-23 12:23:18
Cable TV, IDD telephone switches, and fire safety systems
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2013-05-23 12:24:58
Closed circuit television, program-controlled telephone switchboard and fire safety system
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2013-05-23 12:26:38
Closed-circuit television, program-controlled telephone switches and fire safety systems
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2013-05-23 12:28:18
cable TV, IDD telephone switches, and fire safety systems;
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