通信线路

In communications, pertaining to the state in which a transmission control unit can accept incoming calls on a line.

在通信中，修饰或说明传输控制器的一种状态，在此状态下可接受线路上的输入呼叫。

The traditional fiber optic cable line maintenance management pattern breakdown search difficulty, the platoon bonds the time to be long, affects the communications network the normal work, the economic loss which creates because of the correspondence optical cable breakdown is huge every year.

传统的光缆线路维护管理模式的故障查找困难，排障时间长，影响通信网的正常工作，每年因通信光缆故障而造成的经济损失巨大。

This article includs the synopsis of GSM cellar mobile system ,the theory of base station controller in tracking system of mobile location , design and realization of electronic circuit ,anufacture of hardware, design of software,debugging of hardware and sofrware, design of adwancement,discussion work with related personnel correlation and so on several parts.

本文包括GSM蜂窝移动通信系统的简介，移动位置跟踪系统以及基站控制台的理论、电子线路设计与制作、硬件制作、软件设计、硬件与软件调试、设计进程与各相关人员协调和讨论工作等几部分。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。