极速赛车7码公式

 

极速赛车7码公式

 

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行业新闻

影响屏蔽罩材料的屏蔽效能有哪些因素

发布时间:2017-09-08 08:56:43    浏览量:    新闻来源:深圳市恩凯特精密技术有限公司

  

  DIANCIBOZAICHUANGUOPINGBITISHIFASHENGSHUAIJIANSHIYINWEINENGLIANGYOULESUNHAO,ZHEIZHONGSUNHAOKEYIFENCHENGLIANGGEBUFEN:FANSHESUNHAOHEXISHOUSUNHAO。

极速赛车7码公式  FANSHESUNHAO:DANGDIANCIBORUSHEDAOBUTONGMEIZHIDEFENJIEMIANSHI,JIUHUIFASHENGFANSHE,SHICHUANGUOJIEMIANDEDIANCINENGLIANGJIANRUO。YOUYUFANSHEXIANXIANGERZAOCHENGDEDIANCINENGLIANGSUNSHICHENGWEIFANSHESUNHAO,YONGZIMURBIAOSHI。DANGDIANCIBOCHUANGUOYICENGPINGBITISHIYAOJINGGUOLIANGGEJIEMIAN,YAOFASHENGLIANGCIFANSHE。YINCI,DIANCIBOCHUANGUOPINGBITISHIDEFANSHESUNHAODENGYULIANGGEJIEMIANSHANGDEFANSHESUNHAOZONGHE。FANSHESUNHAODEJISUANGONGSHIRUXIA:

  R=20lg(ZW/ZS) (dB) SHIZHONG: ZW= RUSHEDIANCIBODEBOZUKANG ,ZS=PINGBICAILIAODETEXINGZUKANG

极速赛车7码公式  |ZS|=3.68×10-7(fμrσr)1/2SHIZHONG: f= RUSHEDIANCIBODEPINLV ,μr=XIANGDUICIDAOLV,σr=XIANGDUIDIANDAOLV

  XISHOUSUNHAO:DIANCIBOZAIPINGBICAILIAOZHONGCHUANBOSHI,HUIYOUYIBUFENNENGLIANGZHUANHUANCHENGRELIANG,DAOZHIDIANCINENGLIANGSUNSHI,SUNSHIDEZHEIBUFENNENGLIANGCHENGWEIPINGBICAILIAODEXISHOUSUNHAO,YONGZIMUABIAOSHI,JISUANGONGSHIRUXIA:

  A=3.34t(fμrσr)1/2 (dB)

  DUOCIFANSHEXIUZHENGYINZI: DIANCIBOZAIPINGBITIDEDIERGEJIEMIAN(CHUANCHUPINGBITIDEJIEMIAN)FASHENGFANSHEHOU,HUIZAICICHUANSHUDAODIYIGEJIEMIAN,ZAIDIYIGEJIEMIANFASHEZAICIFANSHE,ERZAICIDAODADIERGEJIEMIAN,ZAIZHEIGEJIEMIANHUIYOUYIBUFENNENGLIANGCHUANTOUJIEMIAN,XIELOUDAOKONGJIAN。ZHEIBUFENSHIEWAIXIELOUDE。YINGGAIKAOLVJINPINGBIXIAONENGDEJISUAN。ZHEIJIUSHIDUOCIFANSHEXIUZHENGYINZI,YONGZIMUBBIAOSHI,DABUFENCHANGHE,BDOUKEYIHULVE。

  SE = R + A + B

极速赛车7码公式  CONGSHANGMIANJICHUDEPINGBIXIAONENGJISUANGONGSHIKEYIDECHUYIXIEDUIGONGCHENGYOUSHIJIZHIDAOYIYIDEJIELUN,GENJUZHEIXIEJIELUN,WOMENKEYIJUEDINGSHIYONGSHENMEPINGBICAILIAO,ZHUYISHENMEWENTI。XIAMIANJICHUDEJIELUN,CHUBUYIKAN,HUIGANDAOZALUANWUZHANG,WUCONGYINGYONG,DANSHIJIEHESHANGMIANDI3HEDI4TIAOZIXIFENXIHOU,HUIFAXIANZHEIXIEJIELUNDOUYOUZHENEIZAILIANXI。SHENRULIJIEXIAMIANDEJIELUNDUIYUJIEGOUSHEJISHISHIFENZHONGYAODE。

极速赛车7码公式  1)CAILIAODEDAODIANXINGHEDAOCIXINGYUEHAO,PINGBIXIAONENGYUEGAO,DANSHIJIDEJINSHUCAILIAOBUKENENGJIANGUZHEILIANGGEFANGMIAN,LIRUTONGDEDAODIANXINGHENHAO,DANSHIDAOCIXINGHENCHA;TIEDEDAOCIXINGHENHAO,DANSHIDAODIANXINGJIAOCHA。YINGGAISHIYONGSHENMECAILIAO,GENJUJUTIPINGBIZHUYAOYILAIFANSHESUNHAO、HAISHIXISHOUSUNHAOLAIJUEDINGSHICEZHONGDAODIANXINGHAISHIDAOCIXING;

  2)PINLVJIAODIDESHIHOU,XISHOUSUNHAOHENXIAO,FANSHESUNHAOSHIPINGBIXIAONENGDEZHUYAOJILI,YAOJINLIANGTIGAOFANSHESUNHAO;

  3)FANSHESUNHAOYUFUSHEYUANDETEXINGYOUGUAN,DUIYUDIANCHANGFUSHEYUAN,FANSHESUNHAOHENDA;DUIYUCICHANGFUSHEYUAN,FANSHESUNHAOHENXIAO。YINCI,DUIYUCICHANGFUSHEYUANDEPINGBIZHUYAOYIKAOCAILIAODEXISHOUSUNHAO,YINGGAIXUANYONGCIDAOLVJIAOGAODECAILIAOZUOPINGBICAILIAO。

  4)FANSHESUNHAOYUPINGBITIDAOFUSHEYUANDEJULIYOUGUAN,DUIYUDIANCHANGFUSHEYUAN,JULIYUEJIN,ZEFANSHESUNHAOYUEDA;DUIYUCICHANGFUSHEYUAN,JULIYUEJIN,ZEFANSHESUNHAOYUEXIAO;ZHENGQUEPANDUANFUSHEYUANDEXINGZHI,JUEDINGTAYINGGAIKAOJINPINGBITI,HAISHIYUANLIPINGBITI,SHIJIEGOUSHEJIDEYIGEZHONGYAONEIRONG。

  5)PINLVJIAOGAOSHI,XISHOUSUNHAOSHIZHUYAODEPINGBIJILI,ZHEISHIYUFUSHEYUANSHIDIANCHANGFUSHEYUANHAISHICICHANGFUSHEYUANGUANXIBUDA。

  6)DIANCHANGBOSHIZUIRONGYIPINGBIDE,PINGMIANBOQICI,CICHANGBOSHIZUINANPINGBIDE。YOUQISHI(1KHzYIXIA)DIPINCICHANG,HENNANPINGBI。DUIYUDIPINCICHANG,YAOCAIYONGGAODAOCIXINGCAILIAO,SHENZHICAIYONGGAODAODIANXINGCAILIAOHEGAODAOCIXINGCAILIAOFUHEQILAIDECAILIAO。

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