The relations between the maximum communication distance and basic parameters (the radiation power of a transmitting antenna,the antenna s cross radius and the sensitivity of a receiving system),which influence the volume and weight of a system of intersatellite optical communications,are analyzed in theory.
文中对它们与最大通讯距离的关系进行了理论分析及数值计算，绘出了各参量与通讯距离的关系曲线。
THE INFLUENCE OF BIT RATE AND OTHER MAIN PARAMETERS ON MAXIMUM COMMUNICATION DISTANCE IN A SYSTEM OF INTERSATELLITE OPTICAL COMMUNICATIONS
卫星间光通讯系统中比特率等主要参量对最大通讯距离的影响
a system for communicating at a distance.
在一定距离上通讯的系统。
analogue transmission
(远距离通讯中的)模拟传输
Satellites make long distant communication possible.
人造卫星使长距离的通讯变成可能。
A Commercial Study and Design on Short Distance Communication Product;
短距离通讯产品的商品化研究与设计
Design of Short Distance Wireless Communicating System Based on WINCE;
基于WINCE的短距离无线通讯系统的设计
Introduction of R&TTE Certification of the RF Short Range Device(SRD)
F短距离通讯设备的R&TTE认证介绍
a communication system that transmits sound between distant points.
在远距离点之间传输声音的一种通讯方式。
Beyond a certain distance we are out of contact with our headquarters.
我们跟总部超过一定距离通讯就会中断.
Our company is on the cutting edge of telecommunications.
我们公司在远距离通讯方面是处于顶尖位置的。
the apparatus used to communicate at a distance over a wire (usually in Morse code).
通过电缆进行远距离通讯的工具（通常用摩尔斯电码）。
We have also been preparing a long distance quantum communication experiment in the air in the Great Wall.
还在长城上进行长距离大气中的量子通讯等试验进行准备。
a communication that transmits images of objects (stationary or moving) between distant points.
在远距离点之间传输物体图象（固定的或移动的）的一种通讯方式。
Research and Implementation of ZIF DSSS Communication in Short Distance;
基于零中频的短距离无线扩频通讯技术研究与实现
Originate digital transmittal signals for anti-theft touch, farther messaging distance, and stronger air-penetration.
首创防盗触动采用数码讯号传讯，传讯距离更远，穿透力更强。
The laser is a very useful means for long-distance communications, the great accuracy in the direction of its beams making effective use of small amounts of power.
激光是远距离通讯非常有用的工具，它的光束定向异常准确，能有效地利用少量的能源。
"By 1970s, television broadcasting of educational programs relayed by communication satellite became available. This has provided a favorable means to spread learning on a large scale and to teach from a faraway place."
到70年代通讯卫星开始转播电视教学节目，为大规模传播知识和远距离教学提供了有利条件。
So powered, the tag exchanges information with the reader.
当读取机从一段距离外间歇发射能量给标签时，标签上的电路即可通电，与读取机交换讯息。
