您要查找的是不是：
- Civil Defense National Telephone System 民防国家电话系统
- Many observers believe that national telephone systems will eventually be upgraded to handle video bandwidths by using fiber optics. 许多观察家相信，全国电话系统最终将因采用光纤而升级，能够处理视频带宽信号。
- The telephone system has broken down. 电话系统失灵了。
- I'm trying to get the hang of the new telephone system. 我正在练习掌握新型的电话机的用法。
- national telephone system 国内电话系统
- We had a new telephone system installed last week. 上周我们安装了一套新的电话系统。
- We have a new telephone system install last week. 上周我们安装了一套新的电话系统。
- Setting up telephone system in the EDP range. 其中文意义为:在电子数据处理范围中设置电话系统。
- The local system is plugged into the national telephone network. This computer plugs into a data bank. 这个地区性电话系统已与全国的电话网连接。这台计算机与资料库连线。
- Our hotel telephone system has IDD service. 饭店的电话系统有国际长途直拨功能。
- The German telephone system is highly efficient. 德国的电话系统效率很高。
- We have to pay in advance to have the new telephone system install. 装新电话系统我们必须预先付款。
- Need to relocate the Telephone System to another location? 需将整套电话系统迁往新地址?
- The telephone system has broken down for several days. 电话系统已经瘫痪好几天了。
- In America the telephone system is run by private corporations. 美国的电话网络由私人电话公司经营。
- Our business scope includes national telephone directories, hardcover, catalogues, mail books, top-grade magazines and high-tech product manuals etc. 公司业务范围包括：全国电话号簿、精装书刊、邮册、目录、高档杂志及高科技产品说明书等。
- It started with hacking telephone systems. 真正的黑客行为是从入侵电话系统开始的。
- PSTN (local telephone system)/VSAT circuits for voice and e-mail capability. PSTN（当地电话系统）/ 语音和电子邮件的小型卫星地面站（VSAT）电路功能。
- The cocoa-tin telephone system is another proof of the way in which solids transmit sounds. 用可可罐头盒做的电话装置是固体传导声音这一方式的另一个证明。
- The speaker explained the nuts and bolts of his plan to establish a new telephone system for the country. 为了给这个国家建立新的电话系统，发言人解释了他的计划要点。
