Pc technology ; photoelectric isolation ; built - in buzzer , these make circuity anti - jamming ability is strong extremely 输出回路均采用光电隔离，抗干扰能力强。
2.
To these question , this article will give some theory analysis : 1 ) the wind - electricity net circuity of malfunction , including simplicity and complexity 针对这些问题，本文从以下几个方面进行理论探讨： ( 1 )风电系统中，针对简单故障和复杂故障分别建立风电网等值电路图。
3.
Decisive factors that deepen the development of modern manufacturing industry include : specialization , market - orientation , substantialization , standardization , circuity and information 专业化、市场化、物质化、标准化、迂回化以及信息化，是决定现代服务业发展深化的主要因素。
4.
With the progress of technology and developing of internet economy in the world , the broadband network becomes another hotspot in internet field when the foam of . com comes to almost nil . with the beginning of new thousand year , hot waves of the broad band surge throughout the country , sorts of investors come and make huge expenses in a constinuous stream to make a majority of marketing lot and lead up the position of broad band market . however , when the net circuity , which is based on huge numbers of cash , is facing the consumers , market really does not redound upon the investors inexpection 随着技术的进步和互联网经济在全球范围内的高速发展，宽带网是继? com "泡沫"破灭后互联网产业的又一热点。新千年开始，全国各地各类投资商纷纷拆巨资"跑马圈地" ，以期在市场份额上抢占宽带网市场领先地位，但是当这些"巨额现金'堆成'的网络线路面向用户时，市场并没有给投资商们预期的回报，宽带网运营商不仅投资回收遥遥无期，还要继续烧掉大量的现金去维持网络的正常运行，大批中小型宽带网运营商苦苦支撑，有的甚至濒临破产。
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