1) ground/air communication equipment
地-空通信设备
2) ground communication facilities
地面通信设备
3) communication equipments
通信设备
1.
For the equipments in the mine are specially needed fire and blast protection, the rescuing communication equipments are relatively large and heavy, affecting the rescue sufficiently carried out.
由于井下设备需进行防火防爆的特殊处理,致使救援通信设备较矿井笨重,影响井下救援行动迅速充分地展开。
2.
And the applying of SCA in communication equipments is under researching.
潜在通路分析技术作为一门新兴技术在通信设备中的应用越来越广泛,尤其是在军事和航天航空领域。
3.
The paper analyzes the function and value of design and presents some design strategies for communication equipments.
分析了产品设计在通信设备的市场竞争中所能发挥的作用和价值,提出了针对该类产品的设计策略。
4) Communication equipment
通信设备
1.
Transitional construction scheme of communication equipments in the running railway line;
营业线通信设备过渡施工方案
2.
The commonly used maintaining methods of communication equipment;
常用的通信设备检修方法
3.
Development of automatic testing system on radio communication equipment;
通信设备自动化检测系统的研制
5) Telecommunication equipment
通信设备
1.
Electromagnetic shielding technology used in telecommunication equipments arch itecture design;
电磁屏蔽技术在通信设备结构设计中的应用
2.
The article mainly introduces the composition of telecommunication,the power source system and characteristic,expatiates mostly maintenance of storage battery and measure ways of thunder guard to telecommunication equipment,and then grounding of telecommunication power source system and telecommunication equipment,stresses importance of strengthening telecommunication power source manage.
论文还重点介绍了对蓄电池的维护和对通信设备的防雷措施方法,以及通信电源和通信设备的接地系统。
3.
According to the demand of telecommunication equipment EMC , the EMC design method from mechanism is put forward in detail in this paper.
根据通信设备电磁屏蔽的需要,从通信设备机械结构设计方面出发,提出了具体电磁屏蔽设计方法。
6) Communications equipment
通信设备
1.
In this paper, the professional 3D modeling software solidworks2006 was used for 3D modeling about selected communications equipment.
本文采用专业的三维建模软件solidworks2006对选定的通信设备进行三维实体建模,在建模过程中对通信设备进行了合理简化。
补充资料:变电所通信设备防护
变电所通信设备防护
protection for communi-cation equipment in substation
高,故当外部远端为零电位的通信电缆与站内通信设备连接时,此电位差可使站内通信设备和引人的电缆遭受破坏,甚至危及人身安全。对此所采取的防护措施有引人通信电缆保护、并联放电管保护、中和变量器保护和隔离变压器保护等。这些保护中,并联放电管保护用于地电位升高不超过1200V的场合;中和变量器保护用于地电位升高不超过4000V的场合;隔离变压器保护则用于更大的地电位升高的电站。 引入通信电缆保护电站地电位升高时,其接地网电位最高,接地网周围电位按指数曲线逐渐降低,其影响范围为接地网周围半径数十米至数百米的区域。在此区域内如有直埋通信电缆,其金属外皮与土壤接触,不同距离土坡的地电位差会使电缆金属外皮流过接地电流,致使金属外皮烧坏或使电缆芯线对外皮的绝缘击穿。因此在危害区域内应选用有对地绝缘护套的电缆,或将电缆穿人绝缘套管埋人地下。电缆芯线对金属外皮和金属外皮对地的绝缘强度应满足设计要求。 并联放电管保护如图2所示,当电站地电位升高时,通信电缆两端的放电管放电接地,部分接地电流从电缆芯线中流过,电缆两端电位与当地地电位大致相等,地电位升高值大部降落在电缆芯线的阻抗上,从而对两端的通信设备和电缆本身起到保护作用。内部保护外部保护一/一┌─┐│通││信││设││备│└─┘电站内电站外 图2并联放电管保护方式示意图 放电管的击穿电压为250~350V,放电电流为10一4oA(15),电缆的远端接地电阻值应根据电缆芯线的直流电阻来确定,约在数欧至数十欧之间。 中和变t器保护如图3所示。中和变量器有3个匝数相等绕向相同的线圈Ll、LZ、L3,其中LI、LZ与电缆的一对芯线相连,L3与电缆的外金属皮相连另一端接地网,当电站地电位升高时,部分接地电流流经线圈L3,则在线圈Ll和LZ产生感应电压,以完全抵,卜扣变t器┌───┐│七工二│└───┘图3中和变t器保护示意图b,and一onsuo tongx旧shebel fanghu变电所通信设备防护(protection for com-munieation叹uipment in substation)防止由于电力系统故障引起对变电所(包括发电厂的变电站)内通信设备及引人通信电缆损坏所采取的保护措施。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条