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摘 要 :一:電(dian)(dian)阻(zu)(zu)??作(zuo)為電(dian)(dian)子行(xing)業的(de)工作(zuo)者,電(dian)(dian)阻(zu)(zu)是無(wu)(wu)人不(bu)知無(wu)(wu)人不(bu)曉的(de)。它的(de)重要性,毋庸置疑。人們都(dou)說“電(dian)(dian)阻(zu)(zu)是所有(you)電(dian)(dian)子電(dian)(dian)路中使用(yong)最多的(de)元件。”??電(dian)(dian)阻(zu)(zu),因(yin)為物(wu)質對電(dian)(dian)流產生的(de)阻(zu)(zu)礙作(zuo)用(yong),所以稱其該作(zuo)用(yong)下的(de)電(dian)(dian)阻(zu)(zu)物(wu)質。電(dian)(dian)阻(zu)(zu)將會導致電(dian)(dian)子流通(tong)量的(de)變化,電(dian)(dian)阻(zu)(zu)越(yue)(yue)小,電(dian)(dian)子流通(tong)量越(yue)(yue)大,反(fan)之亦然。沒有(you)電(dian)(dian)阻(zu)(zu)或(huo)電(dian)(dian)阻(zu)(zu)很
2023-01-03 -
摘 要 :申請的(de)(de)條件: 1、需(xu)具有企(qi)業法(fa)人(ren)資格; 2、企(qi)業在國內無違法(fa)記錄、資信(xin)良好(hao); 3、企(qi)業自身的(de)(de)資金、人(ren)員、技術和管理上具有跨(kua)國公(gong)(gong)(gong)司(si)的(de)(de)比較優(you)勢; 4、須填(tian)寫《境外(wai)投資申請表(biao)》(網上下(xia)載打印填(tian)寫); 5、營業執照(zhao)復(fu)印件加蓋公(gong)(gong)(gong)章; 6、公(gong)(gong)(gong)司(si)股東(dong)決定原件; 7、外(wai)國公(gong)(gong)(gong)司(si)色(se)注冊資料及翻譯(yi)公(gong)(gong)(gong)司(si)
2023-01-03 -
摘 要(yao) :打井(jing)專用J55石油(you)套管的防(fang)腐對策: 1、首先抓好水(shui)質達標,嚴(yan)格水(shui)質檢測和管理。實行(xing)清污分注,加(jia)強主水(shui)管道的清洗工(gong)作,做到站(zhan)內、井(jing)底水(shui)質達標,減(jian)少腐蝕(shi)源(yuan)引入環(huan)形空(kong)間; 2、對已新投產的注水(shui)井(jing),采取(qu)以(yi)投加(jia)殺菌為主的環(huan)空(kong)保護液(ye),并且(qie)形成制度,定(ding)期投加(jia); 3、鑒于機械擦(ca)傷對石油(you)套管腐蝕(shi)產
2023-01-03 -
摘 要 :防腐涂(tu)塑螺旋焊(han)管是由環氧樹脂為主劑的(de)一種雙(shuang)組分、高(gao)固體(ti)分的(de)涂(tu)料。耐(nai)久性好(hao),環氧樹脂固化后的(de)漆(qi)膜(mo)(mo)堅韌(ren)耐(nai)水、涂(tu)膜(mo)(mo)無(wu)毒,對水無(wu)污染。附(fu)著力(li)強,漆(qi)膜(mo)(mo)與(yu)漆(qi)膜(mo)(mo)之(zhi)間都有(you)很好(hao)的(de)附(fu)著力(li)。防腐涂(tu)塑螺旋焊(han)管具有(you)很好(hao)的(de)機械(xie)強度、漆(qi)膜(mo)(mo)堅韌(ren),具有(you)耐(nai)磨和(he)耐(nai)沖擊性能。固體(ti)含量高(gao),涂(tu)膜(mo)(mo)較厚。室溫固化成(cheng)膜(mo)(mo)。無(wu)須大型
2023-01-03 -
摘 要 :河北乾勝管(guan)道有(you)限公司主(zhu)營熱(re)力管(guan)網輸送直(zhi)埋保溫(wen)鋼(gang)(gang)管(guan)定制廠家(jia)(jia)(jia)、滄(cang)州直(zhi)埋式保溫(wen)鋼(gang)(gang)管(guan)批發(fa)廠家(jia)(jia)(jia)、聚氨(an)酯發(fa)泡保溫(wen)無(wu)縫(feng)鋼(gang)(gang)管(guan)價(jia)格、熱(re)力管(guan)網輸送直(zhi)埋保溫(wen)鋼(gang)(gang)管(guan)定制廠家(jia)(jia)(jia)、滄(cang)州直(zhi)埋式保溫(wen)鋼(gang)(gang)管(guan)批發(fa)廠家(jia)(jia)(jia)、聚氨(an)酯發(fa)泡保溫(wen)無(wu)縫(feng)鋼(gang)(gang)管(guan)價(jia)格、防(fang)腐涂塑(su)螺(luo)(luo)旋焊管(guan)廠家(jia)(jia)(jia)銷售(shou)、滄(cang)州環氧煤瀝青防(fang)腐鋼(gang)(gang)管(guan)銷售(shou)、防(fang)腐大口徑螺(luo)(luo)旋鋼(gang)(gang)管(guan)廠家(jia)(jia)(jia)
2023-01-03 -
摘(zhai) 要 :熱力(li)管網輸(shu)送直埋保溫(wen)(wen)鋼管性能(neng)特點: 1、使(shi)用了導(dao)熱系數低、隔(ge)(ge)熱性能(neng)好的(de)硬質聚氨(an)酯作為(wei)(wei)隔(ge)(ge)熱材料,具有優異的(de)隔(ge)(ge)熱性。 2、正常運行后130℃的(de)水輸(shu)送到40公(gong)里以外時,降溫(wen)(wen)僅為(wei)(wei)1℃左(zuo)右(you)。 3、有很強的(de)防水和耐(nai)腐(fu)蝕能(neng)力(li),不需附(fu)設管溝,可(ke)直接埋入地(di)下或水中,施工簡(jian)便(bian)迅速,綜合造價(jia)低。
2023-01-03 -
摘 要 :河北乾勝管(guan)(guan)道有限公司主營(ying)熱力(li)管(guan)(guan)網(wang)輸送直(zhi)埋(mai)(mai)保(bao)(bao)溫(wen)鋼(gang)(gang)管(guan)(guan)定制(zhi)廠(chang)家(jia)(jia)(jia)、滄州直(zhi)埋(mai)(mai)式保(bao)(bao)溫(wen)鋼(gang)(gang)管(guan)(guan)批(pi)發廠(chang)家(jia)(jia)(jia)、聚氨(an)酯發泡保(bao)(bao)溫(wen)無(wu)縫鋼(gang)(gang)管(guan)(guan)價格、熱力(li)管(guan)(guan)網(wang)輸送直(zhi)埋(mai)(mai)保(bao)(bao)溫(wen)鋼(gang)(gang)管(guan)(guan)定制(zhi)廠(chang)家(jia)(jia)(jia)、滄州直(zhi)埋(mai)(mai)式保(bao)(bao)溫(wen)鋼(gang)(gang)管(guan)(guan)批(pi)發廠(chang)家(jia)(jia)(jia)、聚氨(an)酯發泡保(bao)(bao)溫(wen)無(wu)縫鋼(gang)(gang)管(guan)(guan)價格、防(fang)(fang)腐涂塑螺旋焊管(guan)(guan)廠(chang)家(jia)(jia)(jia)銷售(shou)、滄州環氧(yang)煤瀝(li)青防(fang)(fang)腐鋼(gang)(gang)管(guan)(guan)銷售(shou)、防(fang)(fang)腐大口徑螺旋鋼(gang)(gang)管(guan)(guan)廠(chang)家(jia)(jia)(jia)
2023-01-03 -
摘 要 :濟(ji)(ji)南宏源起(qi)重(zhong)設備(bei)有限公(gong)司主營濟(ji)(ji)南二手(shou)行車航(hang)吊(diao)廠(chang)家(jia)、二手(shou)龍門吊(diao)哪家(jia)好、山東單梁懸掛(gua)起(qi)重(zhong)機(ji)公(gong)司、電(dian)動單梁懸掛(gua)起(qi)重(zhong)機(ji)廠(chang)家(jia)直銷、濟(ji)(ji)南單梁懸掛(gua)起(qi)重(zhong)機(ji)銷售(shou)、工(gong)業(ye)用(yong)單梁行車直銷、濟(ji)(ji)南雙梁橋(qiao)式起(qi)重(zhong)機(ji)廠(chang)家(jia)、輕型雙梁起(qi)重(zhong)機(ji)廠(chang)家(jia)直銷、 濟(ji)(ji)南電(dian)動雙梁起(qi)重(zhong)機(ji)銷售(shou)等(deng),歡迎前來(lai)咨詢(xun),聯系電(dian)話:13853150
2023-01-03 -
摘 要 :濟南(nan)宏源起重設備有限公司主營濟南(nan)二手行(xing)車航吊廠(chang)家(jia)、二手龍門吊哪家(jia)好(hao)、山東(dong)單(dan)(dan)梁(liang)懸(xuan)掛起重機(ji)公司、電動單(dan)(dan)梁(liang)懸(xuan)掛起重機(ji)廠(chang)家(jia)直(zhi)(zhi)(zhi)銷(xiao)(xiao)、濟南(nan)單(dan)(dan)梁(liang)懸(xuan)掛起重機(ji)銷(xiao)(xiao)售、工業用單(dan)(dan)梁(liang)行(xing)車直(zhi)(zhi)(zhi)銷(xiao)(xiao)、濟南(nan)雙(shuang)梁(liang)橋式起重機(ji)廠(chang)家(jia)、輕型雙(shuang)梁(liang)起重機(ji)廠(chang)家(jia)直(zhi)(zhi)(zhi)銷(xiao)(xiao)、 濟南(nan)電動雙(shuang)梁(liang)起重機(ji)銷(xiao)(xiao)售等(deng),歡(huan)迎前來咨詢,聯系電話:13853150
2023-01-03 -
摘 要 :濟(ji)南宏源起(qi)重(zhong)(zhong)設(she)備有(you)限公(gong)司主營濟(ji)南二(er)(er)手行車航吊廠(chang)家(jia)、二(er)(er)手龍門吊哪家(jia)好、山東單(dan)(dan)梁(liang)(liang)懸掛起(qi)重(zhong)(zhong)機(ji)公(gong)司、電動單(dan)(dan)梁(liang)(liang)懸掛起(qi)重(zhong)(zhong)機(ji)廠(chang)家(jia)直(zhi)銷(xiao)(xiao)、濟(ji)南單(dan)(dan)梁(liang)(liang)懸掛起(qi)重(zhong)(zhong)機(ji)銷(xiao)(xiao)售(shou)、工(gong)業(ye)用單(dan)(dan)梁(liang)(liang)行車直(zhi)銷(xiao)(xiao)、濟(ji)南雙(shuang)梁(liang)(liang)橋式起(qi)重(zhong)(zhong)機(ji)廠(chang)家(jia)、輕型(xing)雙(shuang)梁(liang)(liang)起(qi)重(zhong)(zhong)機(ji)廠(chang)家(jia)直(zhi)銷(xiao)(xiao)、 濟(ji)南電動雙(shuang)梁(liang)(liang)起(qi)重(zhong)(zhong)機(ji)銷(xiao)(xiao)售(shou)等,歡迎前來咨(zi)詢(xun),聯系電話:13853150
2023-01-03