这家公司专门从事长途通信。
载波通信是铁路长途通信的重要通信手段之一。
The carrier communications are still one of important means in railroad telecommunication up to now.
介绍了如何运用IP电话网络来节省国际，国内长途通信费用。
Application of IP phone net is introduced to save national and international long-distance fees.
根据新的合同，戴尔perot系统公司将继续提供网络运营、桌面服务、电子邮件、信息安全保障、电话和长途通信。
For the new contract, Dell Perot Systems will continue to provide network operations, desktop services, email, information assurance, telephones, and connectivity to long-haul communications.
密集波分复用(DWDM)技术在长途通信中已经得到了广泛的应用，但其高昂的系统成本极大地限制了它在城域网中的应用。
DWDM technology has been widely used in long-distance communications, but its high system cost has greatly limited its application into metro area networks (MAN).
如果建设新的长途光纤通信网络，Light-line将是最大的受益公司之一。
Light-line is one of the companies that will most benefit if new long-distance fiber-optic telecommunications networks are constructed.
我们都是UNIX系统“talk”和“ntalk”的重度用户(大量使用者)，那时候就让我们在互联网上实现实时双向通信，我们也充分利用电子邮件并偶尔打打长途电话。
We were heavy users of UNIX 'talk' and 'ntalk', which allowed real-time two-way communication over the Internet back then, and made good use of email and the occasional long distance phone call.
Harris公司将提供FalconIIRF- 5800H长途高频(HF)无线电系统，具有超视距地面通信能力。
Harris will supply Falcon II RF-5800H high-frequency (HF) radio systems for long-haul, beyond line-of-sight terrestrial communications.
负责长途光缆及市话电缆通信线路工程的勘测设计；
Be in charge of the project Survey& Design in Long – distance optical cable and local copper cable field;
高效率的孤子激光器所产生的高质量光孤子能为长途光通信准备良好的初条件。
High efficiency soliton laser produces qualified optical solitons that is important for long distant soliton fiber communications.
《新京报》报道，中国最大的移动通信运营商中国移动计划于2016年底之前逐步取消长途漫游费。
China Mobile, the country's largest mobile telecom operator, plans to phase out its long distance & roaming charges by the end of 2016, the Beijing Times reports.
《新京报》报道，中国最大的移动通信运营商中国移动计划于2016年底之前逐步取消长途漫游费。
China Mobile, the country's largest mobile telecom operator, plans to phase out its long distance & roaming charges by the end of 2016, the Beijing Times reports.
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