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- four wire telephone circuit 四线制电话线路
- Incorporates a Full Featured Telephone Set. 并入电话机的全部功能。
- Please clean the telephone set including the dial. 请将电话机清理一下,包括拨号盘。
- Compact Desk-Top Package Fits Under A Standard Telephone Set. 简洁的适合放置于桌面上的包装适合于标准电话机。
- This product is of secure type consisting of telephone set and coupler,. 本产品为本质安全型,由电话机和耦合器两部分组成。
- four wire voice frequency telephone repe 四线制话频电话中继器
- A two wire SYSTEM then requires two twisted pair, and a four wire SYSTEM requires three twisted pair. 一个二线制系统两个双绞双绞线对，一个四线制系统需要三个双绞线对。
- The internetphone costs much less than the wired telephone especially when you take the international long distance call. 网际网路电话的费用比有线电话少的多,尤其当你打国际长途时。
- INTEREST: 10000 PCS OF THREE PHASE FOUR WIRE LOW VOLTAGE KILO WATT HOUR METER (10/40) A. 我公司求购三相低压电表，有意者请与我们联系！
- User at the telephone set A desires to place a call through the HF system to distant telephone set D. 位于电话机A位置的用户要通过hf系统拨打长途电话至电话机D。
- It is widely interested how to construct an active power filter to suppress the harmonics in three phase four wire system. 三相四线制系统中如何使用有源电力滤波器来抑制线路中的谐波，这一问题越来越被人们所重视。
- You need add a called line indicator or buy a display telephone set after your application. 申请后需要加装来电显示器或购一部来电显示话机。
- The use of the four wire method and the photoelectric segregation technology raises the test precision and disturbance resistibility. 采用四线法和光隔技术，提高了测试精度和系统的抗干扰能力。
- Based on the idea of FPGA embedded system the design and realization of the Ethernet telephone set is researched. 基于FPGA嵌入式系统的设计思路,对以太网电话机的设计与实现进行了研究。
- A circuit arrangement for deriving a phantom circuit. In four wire circuits, the two wires associated with the "GO" channel form one "side circuit", and those associated with the "return" channel form another. 用来派生一个幻象电路的电路结构。在四线电路中，与“去程”通道相关联的两线就形成了一个“半边电路”, 而与“回程”通道相关联的两线构成了另一个“半边电路”。
- The fees are deducted from the account which the subscribed telephone set corresponds to.The POS service subscriber must possess an exclusive account. 费用在相应的签订的电话机账号扣除。POS服务的签署人只可以拥有唯一的账户,去使用POS服务。
- The internetphone cost much less than the wired telephone especially when you take the international long distance call. 网际网路电话的费用比有线电话少的多，尤其当你打国际长途时。
- This paper analyses the reason that neutral current is not zero when linear three phase system load connects to three phase four wire system source in Y connection. The resolution is also given. 分析了线性三相对称负载Y联接在对称三相四线制电源时 ;中线电流不为零的原因 ;并给出了解决的方法 .
- wire telephone installation section 有线电话设备分排
- And when you call general enquiry lines such as 100, 1605 and 1711, you will be greeted by automated answering machines which give you step-by-step instructions on the numbers to enter on your telephone set, to obtain the information you need. 又如，打100、1605、1711等电话号码，电话另一端会自动告诉你服务项目的内容，并指示你按1、2、3等等。
