广泛传送的

It is superior to automatic meter reading system of power line carrier system, it is characterized by features which are not to build new communication network, more accuracy transmitting kilowatt-hour meter data, and no restriction on region, space,time and distance, and realize point-to-multipoint data transmission.

该系统优于目前电力行业广泛使用的载波方式自动抄表系统，其特点是：不需另建新的网络传输系统，数据传送实时性强，不受地域、空间、距离、时间的限制，可进行一点对多点的数据传输。

In the past few years, both SDH and DWDM had comprehensive applications in the field of optical transmission.

近年来，SDH技术和DWDM技术在光传送领域的应用越来越广泛。

cyclic redundancy check code is a very important cyclic code,the coding and decoding methods are simple,easy to realize.it is strong to detect error,the probability of misjudging is nearly zero.it is a method with extremely high efficiency in controlling errors,which can fulfill the requirement of reliable information transmission in communication systems.it has got very extensive application in observing and controlling and data communication.this paper introduces the encoding and decoding principle of crc in detail,analyzes the feasibility of crc by dsp,and gives out the design proposal and flow chart according to the principle,which is very useful in applications.

摘 要：循环冗余校验码是一种重要的循环码，编码和解码方法简单，容易实现，检错能力强，误判概率几乎为零，是一种效率极高的差错控制方法，可以满足通信系统可靠传送信息的要求，在测控及数据通信中得到了非常广泛的应用。详细介绍了循环冗余校验的编解码原理，分析了用dsp实现crc的合理性，最后给出了根据校验原理实现的设计思想及流程图，具有一定的实用价值。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。