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- The system allows such servicesas direct inward dialing, direct distance dialing, and console switchboards. 该系统允许直接内部拨号、长途直接拨号以及控制台交换转接等。
- There are close to 40 five-star hotels in Beijing and the international direct distance dialing can reach 240 countries and regions. 北京市内仅五星级宾馆就有近40家，国际直拨电话可连接240个国家和地区。
- Central office telephone equipment serving subscribers at one location on a private automatic branch exchange basis. The system allows such servicesas direct inward dialing,direct distance dialing,and console switchboards. 中央局的电话设备，以用户专用自动交换机方式为某一地区的用户服务。该系统允许直接内部拨号、长途直接拨号以及控制台交换转接等。
- Central office telephone equipment serving subscribers at one location on a private automatic branch exchange basis. The system allows such servicesas direct inward dialing, direct distance dialing, and console switchboards. 中央局的电话设备，以用户专用自动交换机方式为某一地区的用户服务。该系统允许直接内部拨号、长途直接拨号以及控制台交换转接等。
- IDDD International Direct Distance Dialing 国际直接长途拨号
- interactive direct distance dialing 国际长途自动电话
- expanded direct distance dialing 扩展的直接远地拨号
- direct distance dialing telephone 长途直拨电话
- Intercontinental Direct Distance Dialing 洲际远程直接拨号
- international direct distance dialing 国际长途直拨
- automatic direct distance dialing system 长途直拨系统
- direct distance dialing 直接长途拨号
- direct distance dialing (DDD) 长途直接拨号电话,长途自动拨号,长途自动电话
- direct distance dialing network 长途直接网络
- direct distance dial 长途直拨
- direct distance dial network [计] 直接长途拨号网络
- direct distance dialling 直接长途拨号
- long distance dialing by subscruber 长途用户拨号
- She cast her eyes down to avoid direct eye contact. 她垂下双目以避免对视。
- automatic distance dialing system 长途自动拨号系统
