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DCS系统抗干扰分析

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DCS系统抗干扰分析

发布日期:2018-12-25 作者:迪奥德自动化 点击:

YI、GAISHU

  随着科学技术的发展,DCS在工业控制中的应用越来越广泛。DCS系统的可靠性直接影响到工业企业的安全生产和经济运行,系统的抗干扰能力是关系到整个系统可靠运行的关键。自动化系统中所使用的各种类型DCS,有的是集中安装在控制室,有的是安装在生产现场和各电机设备上,它们大多处在强电电路和强电设备所形成的恶劣电磁环境中。要提高DCS控制系统7080棋牌可靠性,一方面要求DCS生产厂家提高设备的抗干扰能力;另一方面,要求工程设计、安装施工和使用维护中引起高度重视,多方配合才能完善解决问题,有效地增强系统的抗干扰性能。 


ER、DIANCIGANRAOYUANJIDUIXITONGDEGANRAO

7080棋牌  1、GANRAOYUANJIGANRAOYIBANFENLEI

7080棋牌  YINGXIANGDCSKONGZHIXITONGDEGANRAOYUANYUYIBANYINGXIANGGONGYEKONGZHISHEBEIDEGANRAOYUANYIYANG,DADOUCHANSHENGZAIDIANLIUHUODIANYAJULIEBIANHUADEBUWEI,ZHEIXIEDIANHEJULIEYIDONGDEBUWEIJIUSHIZAOSHENGYUAN,JIGANRAOYUAN。

  GANRAOLEIXINGTONGCHANGANGANRAOCHANSHENGDEYUANYIN、ZAOSHENGGANRAOMOSHIHEZAOSHENGDEBOXINGXINGZHIDEBUTONGHUAFEN。QIZHONG:ANZAOSHENGCHANSHENGDEYUANYINBUTONG,FENWEIFANGDIANZAOSHENG、LANGYONGZAOSHENG、GAOPINZHENDANGZAOSHENGDENG;ANZAOSHENGDEBOXING、XINGZHIBUTONG,FENWEICHIXUZAOSHENG、OUFAZAOSHENGDENG;ANZAOSHENGGANRAOMOSHIBUTONG,FENWEIGONGMOGANRAOHECHAMOGANRAO。GONGMOGANRAOHECHAMOGANRAOSHIYIZHONGBIJIAOCHANGYONGDEFENLEIFANGFA。GONGMOGANRAOSHIXINHAODUIDIDEDIANWEICHA,ZHUYAOYOUDIANWANGCHUANRU、DIDIANWEICHAJIKONGJIANDIANCIFUSHEZAIXINHAOXIANSHANGGANYINGDEGONGTAI(TONGFANGXIANG)DIANYADIEJIASUOXINGCHENG。GONGMODIANYAYOUSHIJIAODA,TEBIESHICAIYONGGELIXINGNENGCHADEPEIDIANQIGONGDIANSHI,BIANSONGQISHUCHUXINHAODEGONGMODIANYAPUBIANJIAOGAO,YOUDEKEGAODA130VYISHANG。GONGMODIANYATONGGUOBUDUICHENGDIANLUKEZHUANHUANCHENGCHAMODIANYA,ZHIJIEYINGXIANGCEKONGXINHAO,ZAOCHENGYUANQIJIANSUNHUAI(ZHEIJIUSHIYIXIEXITONGI/OMOJIANSUNHUAILVJIAOGAODEZHUYAOYUANYIN),ZHEIZHONGGONGMOGANRAOKEWEIZHILIU、YIKEWEIJIAOLIU。CHAMOGANRAOSHIZHIZUOYONGYUXINHAOLIANGJIJIANDEGANRAODIANYA,ZHUYAOYOUKONGJIANDIANCICHANGZAIXINHAOJIANOUHEGANYINGJIYOUBUPINGHENGDIANLUZHUANHUANGONGMOGANRAOSUOXINGCHENGDEDIANYA,ZHEIZHONGZHIJIEDIEJIAZAIXINHAOSHANG,ZHIJIEYINGXIANGCELIANGYUKONGZHIJINGDU。

  2、DCSKONGZHIXITONGZHONGDIANCIGANRAODEZHUYAOLAIYUAN

  2.1、LAIZIKONGJIANDEFUSHEGANRAO

  KONGJIANDEFUSHEDIANCICHANG(EMI)ZHUYAOSHIYOUDIANLIWANGLUO、DIANQISHEBEIDEZANTAIGUOCHENG、LEIDIAN、WUXIANDIANGUANGBO、DIANSHI、LEIDA、GAOPINGANYINGJIARESHEBEIDENGCHANSHENGDE,TONGCHANGCHENGWEIFUSHEGANRAO,QIFENBUJIWEIFUZA。RUODCSXITONGZHIYUSUOSHEPINCHANGNEI,JIUHUISHOUDAOFUSHEGANRAO,QIYINGXIANGZHUYAOTONGGUOLIANGTIAOLUJING:YISHIZHIJIEDUIDCSNEIBUDEFUSHE,YOUDIANLUGANYINGCHANSHENGGANRAO;ERSHIDUIDCSTONGXINNEIWANGLUODEFUSHE,YOUTONGXINXIANLUDEGANYINGYINRUGANRAO。FUSHEGANRAOYUXIANCHANGSHEBEIBUZHIJISHEBEISUOCHANSHENGDEDIANCICHANGDAXIAO,TEBIESHIPINLVYOUGUAN,YIBANTONGGUOSHEZHIPINGBIDIANLANHEDCSJUBUPINGBIJIGAOYAXIEFANGYUANJIANJINXINGBAOHU。

7080棋牌  2.2、LAIZIXITONGWAIYINXIANDEGANRAO

  ZHUYAOTONGGUODIANYUANHEXINHAOXIANYINRU,TONGCHANGCHENGWEICHUANDAOGANRAO。ZHEIZHONGGANRAOZAIWOGUOGONGYEXIANCHANGJIAOYANZHONG。

(1)LAIZIDIANYUANDEGANRAO

  实践证明,因电源引入的干扰造成dcs系统集成7080棋牌故障的情况很多,笔者在某工程调试中遇到过,后更换隔离性能更高的DCS电源,问题才得到解决。

7080棋牌  DCSXITONGDEZHENGCHANGGONGDIANDIANYUANJUNYOUDIANWANGGONGDIAN。

7080棋牌  YOUYUDIANWANGFUGAIFANWEIGUANG,TAJIANGSHOUDAOSUOYOUKONGJIANDIANCIGANRAOERZAIXIANLUSHANGGANYINGDIANYAHEDIANLU。YOUQISHIDIANWANGNEIBUDEBIANHUA,RUKAIGUANCAOZUOLANGYONG、DAXINGDIANLISHEBEIQITING、JIAOZHILIUCHUANDONGZHUANGZHIYINQIDEXIEBO、DIANWANGDUANLUZANTAICHONGJIDENG,DOUTONGGUOSHUDIANXIANLUCHUANDAODIANYUANYUANBIAN。DCSDIANYUANTONGCHANGCAIYONGGELIDIANYUAN,DANQIJIGOUJIZHIZAOGONGYIYINSUSHIQIGELIXINGBINGBULIXIANG。SHIJISHANG,YOUYUFENBUCANSHUTEBIESHIFENBUDIANRONGDECUNZAI,JUEDUIGELISHIBUKENENGDE。

7080棋牌  (2)LAIZIXINHAOXIANYINRUDEGANRAO

  YUDCSKONGZHIXITONGLIANJIEDEGELEIXINHAOCHUANSHUXIAN,CHULECHUANSHUYOUXIAODEGELEIXINXIZHIWAI,ZONGHUIYOUWAIBUGANRAOXINHAOQINRU。CIGANRAOZHUYAOYOULIANGZHONGTUJING:YISHITONGGUOBIANSONGQIGONGDIANDIANYUANHUOGONGYONGXINHAOYIBIAODEGONGDIANDIANYUANCHUANRUDEDIANWANGGANRAO,ZHEIWANGWANGBEIHUSHI;ERSHIXINHAOXIANSHOUKONGJIANDIANCIFUSHEGANYINGDEGANRAO,JIXINHAOXIANSHANGDEWAIBUGANYINGGANRAO,ZHEISHIHENYANZHONGDE。YOUXINHAOYINRUGANRAOHUIYINQII/OXINHAOGONGZUOYICHANGHECELIANGJINGDUDADAJIANGDI,YANZHONGSHIJIANGYINQIYUANQIJIANSUNSHANG。DUIYUGELIXINGNENGCHADEXITONG,HAIJIANGDAOZHIXINHAOJIANHUXIANGGANRAO,YINQIGONGDIXITONGZONGXIANHUILIU,ZAOCHENGLUOJISHUJUBIANHUA、WUDONGHESIJI。DCSKONGZHIXITONGYINXINHAOYINRUGANRAOZAOCHENGI/OMOJIANSUNHUAISHUXIANGDANGYANZHONG,YOUCIYINQIXITONGGUZHANGDEQINGKUANGYEHENDUO。

  (3)LAIZIJIEDIXITONGHUNLUANSHIDEGANRAO

  JIEDISHITIGAODIANZISHEBEIDIANCIJIANRONGXING(EMC)DEYOUXIAOSHOUDUANZHIYI。ZHENGQUEDEJIEDI,JINENGYIZHIDIANCIGANRAODEYINGXIANG,YOUNENGYIZHISHEBEIXIANGWAIFACHUGANRAO;ERCUOWUDEJIEDI,FANERHUIYINRUYANZHONGDEGANRAOXINHAO,SHIDCSXITONGJIANGWUFAZHENGCHANGGONGZUO。

  DCSKONGZHIXITONGDEDIXIANBAOKUOXITONGDI、PINGBIDI、JIAOLIUDIHEBAOHUDIDENG。JIEDIXITONGHUNLUANDUIDCSXITONGDEGANRAOZHUYAOSHIGEGEJIEDIDIANDIANWEIFENBUBUJUN,BUTONGJIEDIDIANJIANCUNZAIDIDIANWEICHA,YINQIDIHUANLUDIANLIU,YINGXIANGXITONGZHENGCHANGGONGZUO。LIRUDIANLANPINGBICENGBIXUYIDIANJIEDI,RUGUODIANLANPINGBICENGLIANGDUANA、BDOUJIEDI,JIUCUNZAIDIDIANWEICHA,YOUDIANLIULIUGUOPINGBICENG,DANGFASHENGYICHANGZHUANGTAIRULEIJISHI,DIXIANDIANLIUJIANGGENGDA。

7080棋牌  CIWAI,PINGBICENG、JIEDIXIANHEDADIYOUKENENGGOUCHENGBIHEHUANLU,ZAIBIANHUACICHANGDEZUOYONGXIA,PINGBICENGNEIYOUHUICHUXIANGANYINGDIANLIU,TONGGUOPINGBICENGYUXINXIANZHIJIANDEOUHE,GANRAOXINHAOHUILU。RUOXITONGDIYUQITAJIEDICHULIHUNLUAN,SUOCHANSHENGDEDIHUANLIUJIUKENENGZAIDIXIANSHANGCHANSHENGBUDENGDIANWEIFENBU,YINGXIANGDCSNEILUOJIDIANLUHEMONIDIANLUDEZHENGCHANGGONGZUO。DCSGONGZUODELUOJIDIANYAGANRAORONGXIANJIAODI,LUOJIDIDIANWEIDEFENBUGANRAORONGYIYINGXIANGDCSDELUOJIYUNSUANHESHUJUCUNZHU,ZAOCHENGSHUJUHUNLUAN、CHENGXUPAOFEIHUOSIJI。MONIDIDIANWEIDEFENBUJIANGDAOZHICELIANGJINGDUXIAJIANG,YINQIDUIXINHAOCEKONGDEYANZHONGSHIZHENHEWUDONGZUO。

  2.3、LAIZIDCSXITONGNEIBUDEGANRAO

  ZHUYAOYOUXITONGNEIBUYUANQIJIANJIDIANLUJIANDEXIANGHUDIANCIFUSHECHANSHENG,RULUOJIDIANLUXIANGHUFUSHEJIQIDUIMONIDIANLUDEYINGXIANG,MONIDIYULUOJIDIDEXIANGHUYINGXIANGJIYUANQIJIANJIANDEXIANGHUBUPIPEISHIYONGDENG。ZHEIDOUSHUYUDCSZHIZAOCHANGDUIXITONGNEIBUJINXINGDIANCIJIANRONGSHEJIDENEIRONG,BIJIAOFUZA,ZUOWEIYINGYONGBUMENSHIWUFAGAIBIAN,KEBUBIGUODUOKAOLV,DANYAOXUANZEJUYOUJIAODUOYINGYONGSHIJIHUOJINGGUOKAOYANDEXITONG。

dcs系统

SAN、DCSKONGZHIXITONGGONGCHENGYINGYONGDEKANGGANRAOSHEJI

  WEILEBAOZHENGXITONGZAIGONGYEDIANCIHUANJINGZHONGMIANSHOUHUOJIANSHAONEIWAIDIANCIGANRAO,BIXUCONGSHEJIJIEDUANKAISHIBIANCAIQUSANGEFANGMIANYIZHICUOSHI:YIZHIGANRAOYUAN;QIEDUANHUOSHUAIJIANDIANCIGANRAODECHUANBOTUJING;TIGAOZHUANGZHIHEXITONGDEKANGGANRAONENGLI。ZHEISANDIANJIUSHIYIZHIDIANCIGANRAODEJIBENYUANZE。

  DCSKONGZHIXITONGDEKANGGANRAOSHIYIGEXITONGGONGCHENG,YAOQIUZHIZAODANWEISHEJISHENGCHANCHUJUYOUJIAOQIANGKANGGANRAONENGLIDECHANPIN,QIEYOULAIYUSHIYONGBUMENZAIGONGCHENGSHEJI、ANZHUANGSHIGONGHEYUNXINGWEIHUZHONGYUYIQUANMIANKAOLV,BINGJIEHEJUYOUQINGKUANGJINXINGZONGHESHEJI,CAINENGBAOZHENGXITONGDEDIANCIJIANRONGXINGHEYUNXINGKEKAOXING。

JINXINGJUTIGONGCHENGDEKANGGANRAOSHEJISHI,YINGZHUYAOYIXIALIANGGEFANGMIAN。

  1、SHEBEIXUANXING

  ZAIXUANZESHEBEISHI,SHOUXIANYAOXUANZEYOUJIAOGAOKANGGANRAONENGLIDECHANPIN,QIBAOKUOLEDIANCIJIANRONGXING(EMC),YOUQISHIKANGWAIBUGANRAONENGLI,RUCAIYONGFUDIJISHU、GELIXINGNENGHAODEDCSXITONG;QICIHAIYINGLEJIESHENGCHANCHANGJICHUDEKANGGANRAOZHIBIAO,RUGONGMONIZHIBI、CHAMONIZHIBI,NAIYANENGLI、YUNXUZAIDUODADIANCHANGQIANGDUHEDUOGAOPINLVDECICHANGQIANGDUHUANJINGZHONGGONGZUO;LINGWAISHIKAOKAOCHAQIZAILEISIGONGZUOZHONGDEYINGYONGSHIJI。ZAIXUANZEGUOWAIJINKOUCHANPINYAOZHUYI:WOGUOSHICAIYONG220VGAONEIZUDIANWANGZHISHI,EROUMEIDIQUSHI110VDINEIZUDIANWANG。YOUYUWOGUODIANWANGNEIZUDA,LINGDIANDIANWEIPIAOYIDA,DIDIANWEIBIANHUADA,GONGYEQIYEXIANCHANGDEDIANCIGANRAOZHISHAOYAOBIOUMEIDIQUGAO4BEIYISHANG,DUIXITONGKANGGANRAOXINGNENGYAOQIUGENGGAO,ZAIGUOWAINENGZHENGCHANGGONGZUODEDCSCHANPINZAIGUONEIGONGYEJIUBUYIDINGNENGKEKAOYUNXING,ZHEIJIUYAOZAICAIYONGGUOWAICHANPINSHI,ANWOGUODEBIAOZHUN(GB/T13926)HELIXUANZE。

7080棋牌  2、ZONGHEKANGGANRAOSHEJI

  ZHUYAOKAOLVLAIZIXITONGWAIBUDEJIZHONGRUGUOYIZHICUOSHI。ZHUYAONEIRONGBAOKUO:DUIDCSXITONGJIWAIYINXIANJINXINGPINGBIYIFANGKONGJIANFUSHEDIANCIGANRAO;DUIWAIYINXIANJINXINGGELI、LVBO,TEBIESHIYUANLIDONGLIDIANLAN,FENCENGBUZHI,YIFANGTONGGUOWAIYINXIANYINRUCHUANDAODIANCIGANRAO;ZHENGQUESHEJIJIEDIDIANHEJIEDIZHUANGZHI,WANSHANJIEDIXITONG。LINGWAIHAIBIXULIYONGRUANJIANSHOUDUAN,JINYIBUTIGAOXITONGDEANQUANKEKAOXING。


SI、ZHUYAOKANGGANRAOCUOSHI

  1、CAIYONGXINGNENGYOULIANGDEDIANYUAN,YIZHIDIANWANGYINRUDEGANRAO

  ZAIDCSKONGZHIXITONGZHONG,DIANYUANZHANYOUJIZHONGYAODEDIWEI。DIANWANGGANRAOCHUANRUDCSKONGZHIXITONGZHUYAOTONGGUODCSXITONGDEGONGDIANDIANYUAN(RUCPUDIANYUAN、I/ODIANYUANDENG)、BIANSONGQIGONGDIANDIANYUANHEYUDCSXITONGJUYOUZHIJIEDIANQILIANJIEDEYIBIAOGONGDIANDIANYUANDENGOUHEJINRUDE。XIANZAI,DUIYUDCSXITONGGONGDIANDEDIANYUAN,YIBANDOUCAIYONGGELIXINGNENGJIAOHAODIANYUAN,ERDUIYUBIANSONGQIGONGDIANDEDIANYUANHEDCSXITONGYOUZHIJIEDIANQILIANJIEDEYIBIAODEGONGDIANDIANYUAN,BINGMEISHOUDAOZUGOUDEZHONGSHI,SUIRANCAIQULEYIDINGDEGELICUOSHI,DANPUBIANHAIBUGOU,ZHUYAOSHISHIYONGDEGELIBIANYAQIFENBUCANSHUDA,YIZHIGANRAONENGLICHA,JINGDIANYUANOUHEERCHUANRUGONGMOGANRAO、CHAMOGANRAO。SUOYI,DUIYUBIANSONGQIHEGONGYONGXINHAOYIBIAOGONGDIANYINGXUANZEFENBUDIANRONGXIAOYIZHIDAIDA(RUCAIYONGDUOCIGELIHEPINGBIJILOUGANJISHU)DEPEIDIANQI,YIJIANSHAODCSXITONGDEGANRAO。

7080棋牌  CIWAI,WEIBAOZHENGDIANWANGKUIDIANBUZHONGDUAN,KECAIYONGZAIXIANSHIBUJIANDUANGONGDIANDIANYUAN(UPS)GONGDIAN,TIGAOGONGDIANDEANQUANKEKAOXING。BINGQIEUPSHAIJUYOUJIAOQIANGDEGANRAOGELIXINGNENG,SHIYIZHONGDCSKONGZHIXITONGDELIXIANGDIANYUAN。

7080棋牌  2、DIANLANXUANZEDEAOSHE

  WEILEJIANSHAODONGLIDIANLANFUSHEDIANCIGANRAO,YOUQISHIBIANPINZHUANGZHIKUIDIANDIANLAN。BIZHEZAIMOUGONGCHENGZHONG,CAIYONGLETONGDAIKAIZHUANGPINGBIDIANLIDIANLAN,CONGERJIANGDILEDONGLIXIANSHENGCHANDEDIANCIGANRAO,GAIGONGCHENGTOUCHANHOUQUDELEMANYIDEXIAOGUO。

  BUTONGLEIXINGDEXINHAOFENBIEYOUBUTONGDIANLANCHUANSHU,XINHAODIANLANYINGANCHUANSHUXINHAOZHONGLEIFENCENGAOSHE,YANJINYONGTONGYIDIANLANDEBUTONGDAOXIANTONGSHICHUANSONGDONGLIDIANYUANHEXINHAO,BIMIANXINHAOXIANYUDONGLIDIANLANKAOJINPINGXINGAOSHE,YIJIANSHAODIANCIGANRAO。

3、YINGJIANLVBOJIRUANJIANKANGGANRAOCUOSHI

  XINHAOZAIJIERUJISUANJIQIAN,ZAIXINHAOXIANYUDIJIANBINGJIEDIANRONG,YIJIANSHAOGONGMOGANRAO;ZAIXINHAOLIANGJIJIANJIAZHUANGLVBOQIKEJIANSHAOCHAMOGANRAO。

  YOUYUDIANCIGANRAODEFUZAXING,YAOGENBENXIAOCHUYINGJIEGANRAOYINGXIANGSHIBUKENENGDE,YINCIZAIDCSKONGZHIXITONGDERUANJIANSHEJIHEZUTAISHI,HAIYINGZAIRUANJIANFANGMIANJINXINGKANGGANRAOCHULI,JINYIBUTIGAOXITONGDEKEKAOXING。

  CHANGYONGDEYIXIECUOSHI:SHUZILVBOHEGONGPINZHENGXINGCAIYANG,KEYOUXIAOXIAOCHUZHOUQIXINGGANRAO;DINGSHIXIAOZHENGCANKAODIANDIANWEI,BINGCAIYONGDONGTAILINGDIAN,KEYOUXIAOFANGZHIDIANWEIPIAOYI;CAIYONGXINXIRONGYUJISHU,SHEJIXIANGYINGDERUANJIANBIAOZHIWEI;CAIYONGJIANJIETIAOZHUAN,SHEZHIRUANJIANXIANJINGDENGTIGAORUANJIANJIEGOUKEKAOXING。

  4、ZHENGQUEXUANZEJIEDIDIAN,WANSHANJIEDIXITONG

7080棋牌  JIEDIDEMUDETONGCHANGYOULIANGGE,QIYIWEILEANQUAN,QIERSHIWEILEYIZHIGANRAO。WANSHANDEJIEDIXITONGSHIDCSKONGZHIXITONGKANGDIANCIGANRAODEZHONGYAOCUOSHIZHIYI。

  XITONGJIEDIFANGSHIYOU:FUDIFANGSHI、ZHIJIEJIEDIFANGSHIHEDIANRONGJIEDISANZHONGFANGSHI。DUIDCSXITONGERYAN,TASHUGAOSUDIDIANPINGKONGZHIZHUANGZHI,YINGCAIYONGZHIJIEJIEDIFANGSHI。YOUYUXINHAODIANLANFENBUDIANRONGHESHURUZHUANGZHILVBODENGDEYINGXIANG,ZHUANGZHIZHIJIANDEXINHAOJIAOHUANPINLVYIBANDOUDIYU1MHz,SUOYIDCSKONGZHIXITONGJIEDIXIANCAIYONGYIDIANJIEDIHECHUANLIANYIDIANJIEDIFANGSHI。JIZHONGBUZHIDEDCSXITONGSHIYUBINGLIANYIDIANJIEDIFANGSHI,GEZHUANGZHIDEJUTIZHONGXINJIEDIDIANYIDANDUDEJIEDIXIANYINXIANGJIEDIJI。RUGUOZHUANGZHIJIANJUJIAODA,YINGCAIYONGCHUANLIANYIDIANJIEDIFANGSHI。YONGYIGENDAJIEMIANTONGMUXIAN(HUOJUEYUANDIANLAN)LIANJIEGEZHUANGZHIDEJUTIZHONGXINJIEDIDIAN,RANHOUJIANGJIEDIMUXIANZHIJIELIANJIEJIEDIJI。JIEDIXIANCAIYONGJIEMIANDAYU22mm2DETONGDAOXIAN,ZONGMUXIANSHIYONGJIEMIANDAYU60mm2DETONGPAI。JIEDIJIDEJIEDIDIANZUXIAOYU2Ω,JIEDIJIZUIHAOMAIZAIJUJIANZHUWU10~15mYUANCHU,ERQIEDCSXITONGJIEDIDIANBIXUYUQIANGDIANSHEBEIJIEDIDIANXIANGJU10mYISHANG。

  XINHAOYUANJIEDISHI,PINGBICENGYINGZAIXINHAOCEJIEDI;BUJIEDISHI,YINGZAIDCSCEJIEDI;XINHAOXIANZHONGJIANYOUJIETOUSHI,PINGBICENGYINGLAOGULIANJIEBINGJINXINGJUEYUANCHULI,YIDINGYAOBIMIANDUODIANJIEDI;DUOGECEDIANXINHAODEPINGBISHUANGJIAOXIANYUDUOXINDUIJIAOZONGPINGDIANLANLIANJIESHI,GEPINGBICENGYINGXIANGHULIANJIEHAO,BINGJINGJUEYUANCHULI。XUANZESHIDANGDEJIEDICHUDANDIANJIEDIAN。


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关键词:sis系统,dcs系统,dcs系统集成

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