Twisted - pair implementations use a " jam " signal instead , whereby a station that detects a collision sends a signal to the hub , which in turn sends jams to all other devices connected to the hub 双绞线方案则是采用“干扰”信号，这时检测到碰撞的站发送信号给集线器，集线器再把干扰信号发送给与集线器相连的其它所有设备。
It was the first of several orbiters that are surveying the cold , barren lannscape , looking especially for signs of water , and relaying signals from the two robotic rovers crawling over the terrain 它是那些探测这块寒冷贫瘠的土地的卫星中的第一颗，专门用来探索水的迹象，并通过两个缓慢运行于火星表面的飞行器把信号发送回地球。
Aiming at the problem of intercepting the direct sequence spread spectrum communication signal , this paper makes full use of the wave characteristic of base - band signal after it is applied to shaping filter is made , and an algorithm which is based on the average power serial is given 摘要针对直接序列扩频通信信号的侦察问题，充分利用扩频基带信号发送成型滤波后的波形特点，提出了一种基于最大平均功率序列的算法。
The factory covers an area of more than 10 000 square meters , owning television production line with advanced technology , production line of the multi functional inner works , automatic plug in package machine of high speed , whole rule signal send system , large - scale molding plastics machine of high performance , chassis automatic spraying production line and relevant corollary equipment 公司占地面积10000多平方米，拥有国内先进水平的电视机生产线、多功能机芯生产线、高速自动化插件机、全制式信号发送系统、高性能大型注塑机、机壳自动喷涂生产线及其相关配套设备。
Signaling - sending control signals that start and stop a transmission or other operation - is not much different on linux as compared with other unix platforms except that the signal numbers might differ or some of the signals , such as sigemt , are not available on some distributions such as rhel as 3 与其他unix平台相比，信号发送启动和停止某个传输或者其他操作的控制信号并没有太大的不同，只是信号号码可能不一样，或者有些信号在某些发行版本（ rhel as 3 ）上不可用，比如sigemt 。
A few kinds of signal separate measures , double caner frequency automatc switch function and relay function are taken into account on the design of wfplc - ml iniddle - voltage distribution line carrier modem . coupling equipment is designed with the filter and capacitance fitted togethel in this papef , it is also advanced an scheme about caner signal spanning the distribution line break . the equipment system has been finished and put into use , which has better result . the feasibly and necessity of the studying of this problem are posed Wfplc3510中压配电载波系统利用10kv的架空线或电缆，将主控断发出的命令信息转换为载波信号通过三相耦合器耦合到电力传输线上，在被控端利用单相耦合器耦合到载波信号后转换为接口信号发送给被控单元，被控单元亦可将返回数据通过单相耦合发送载波信号到主控端，实现信息的双向传递。
