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| 信道服务单元/数据业务单元 | |||
| 通路服务单元/数据服务单元交换局与用户之间的 ISDN 接口设备 | |||
| English thesaurus | |||
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| CSU/DSU (Vosoni) | |||
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channel service unit/data service unit : 3 phrases in 2 subjects |
| Electronics | 2 |
| Multimedia | 1 |
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