您要查找的是不是：
- digital key telephone system 数字键控电话系统
- Modular Electronic Key Telephone System 模式电子键电话系统
- digital cordless key telephone system 数字多功能无绳电话系统, 数字键控无绳电话系统
- Key telephone systems are typically used by small offices where internal call volume is high but external call volume is low. 按键电话系统通常用于小办公室中,其中内部通话音量大,外部通话音量小。
- Iwatsu Electric Co., Ltd., founded in 1938, is a leading telecommunication equipment manufacturer, marketing Key Telephone systems as its flagship products. 岩崎电子有限公司成立于1938年，是领先的电信设备制造商，按键电话系统是其主力产品。
- The telephone system has broken down. 电话系统失灵了。
- telephone of key telephone system 按键电话系统电话
- 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。
- 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。
- 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。
- key telephone system 按键式电话系统
- 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。
- We are interested in the following products.Gate operators,door,operators,remote controls ,safety cells,digital key pads,proximity readers,intercoms. 现寻找生产汽车活塞的供应商，希望供应商提供产品的详细信息。
- Need to relocate the Telephone System to another location? 需将整套电话系统迁往新地址?
- The RFID chip is not supposed to divulge any data until the reading machine on the immigration official's desk authenticates itself by presenting an encrypted digital key. 在移民官办公桌上的读卡器上要求输入数字加密密钥进行验证之前，RFID芯片是不会透露任何数据的。
- 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。
