疯狂做受xxxx高潮视频免费_当着全班面被C到高潮哭视频_久久综合九色综合欧美_国产免费av片在线观看

電(dian)(dian)(dian)(dian)纜(lan)在現代電(dian)(dian)(dian)(dian)力系統中起著至關重要的(de)作用(yong)，承(cheng)擔著輸(shu)送(song)和(he)(he)分配電(dian)(dian)(dian)(dian)能的(de)任務。然(ran)而，由于長(chang)期(qi)運行和(he)(he)外部環境的(de)影響，電(dian)(dian)(dian)(dian)纜(lan)故(gu)(gu)障(zhang)(zhang)(zhang)成為電(dian)(dian)(dian)(dian)力系統中常見的(de)問題之(zhi)一(yi)(yi)。為了及時發現和(he)(he)修復電(dian)(dian)(dian)(dian)纜(lan)故(gu)(gu)障(zhang)(zhang)(zhang)，提高電(dian)(dian)(dian)(dian)力系統的(de)可靠性和(he)(he)安全性，電(dian)(dian)(dian)(dian)纜(lan)故(gu)(gu)障(zhang)(zhang)(zhang)探(tan)傷儀(yi)成為一(yi)(yi)種(zhong)(zhong)不可少的(de)工具。電(dian)(dian)(dian)(dian)纜(lan)故(gu)(gu)障(zhang)(zhang)(zhang)探(tan)傷儀(yi)是一(yi)(yi)種(zhong)(zhong)專(zhuan)業(ye)的(de)測試設(she)備，用(yong)于檢測和(he)(he)定位(wei)電(dian)(dian)(dian)(dian)纜(lan)中的(de)故(gu)(gu)障(zhang)(zhang)(zhang)點。它采用(yong)多種(zhong)(zhong)無損檢測技術(shu)，如變電(dian)(dian)(dian)(dian)磁法、超聲波法和(he)(he)電(dian)(dian)(dian)(dian)纜(lan)局放測量(liang)等，能夠(gou)對電(dian)(dian)(dian)(dian)纜(lan)進行全面(mian)的(de)檢測和(he)(he)分析(xi)。通過使用(yong)探(tan)傷儀(yi)，操作人(ren)員可以(yi)快速準確地確定故(gu)(gu)障(zhang)(zhang)(zhang)位(wei)置(zhi)，并評估故(gu)(gu)障(zhang)(zhang)(zhang)類(lei)型和(he)(he)程度(du)，為后續維修...

電(dian)(dian)(dian)纜(lan)(lan)烘(hong)(hong)干(gan)(gan)機(ji)(ji)是一(yi)種專門用(yong)(yong)于(yu)干(gan)(gan)燥(zao)電(dian)(dian)(dian)纜(lan)(lan)的(de)(de)設(she)備，它(ta)能(neng)(neng)夠有(you)效地去除電(dian)(dian)(dian)纜(lan)(lan)中的(de)(de)水(shui)分，提(ti)高電(dian)(dian)(dian)纜(lan)(lan)的(de)(de)絕緣性能(neng)(neng)和使(shi)用(yong)(yong)壽命。下面將介紹該機(ji)(ji)的(de)(de)工(gong)作原理(li)以及其廣泛應(ying)用(yong)(yong)的(de)(de)領域。一(yi)、工(gong)作原理(li)：采(cai)用(yong)(yong)加熱(re)和通(tong)風的(de)(de)方式進行干(gan)(gan)燥(zao)。首先，電(dian)(dian)(dian)纜(lan)(lan)被放(fang)置在(zai)烘(hong)(hong)干(gan)(gan)機(ji)(ji)的(de)(de)內部(bu)空間(jian)中。然(ran)后(hou)，烘(hong)(hong)干(gan)(gan)機(ji)(ji)啟動加熱(re)元件，產(chan)生熱(re)量。這些加熱(re)元件可以是電(dian)(dian)(dian)熱(re)管、電(dian)(dian)(dian)熱(re)片(pian)或(huo)者紅外線(xian)加熱(re)器等。加熱(re)過(guo)程會使(shi)得(de)烘(hong)(hong)干(gan)(gan)機(ji)(ji)內部(bu)的(de)(de)溫(wen)度升高，進而(er)將電(dian)(dian)(dian)纜(lan)(lan)表面和內部(bu)的(de)(de)水(shui)分蒸發出來(lai)。同時，烘(hong)(hong)干(gan)(gan)機(ji)(ji)內部(bu)配置了(le)通(tong)風系(xi)統(tong)，能(neng)(neng)夠將濕氣排出，保持干(gan)(gan)燥(zao)環境。整個(ge)過(guo)程的(de)(de)時間(jian)和溫(wen)度可以根據電(dian)(dian)(dian)...

電(dian)纜(lan)(lan)熱(re)補器是一種(zhong)用于修復(fu)(fu)和(he)維護(hu)損壞電(dian)纜(lan)(lan)的(de)(de)(de)(de)設備，它(ta)的(de)(de)(de)(de)工(gong)作原理基于電(dian)阻加(jia)熱(re)和(he)熱(re)收縮效(xiao)應。當電(dian)纜(lan)(lan)發生中斷時，電(dian)纜(lan)(lan)熱(re)補器的(de)(de)(de)(de)兩端會(hui)連接到(dao)中斷的(de)(de)(de)(de)電(dian)纜(lan)(lan)段(duan)上(shang)。然后(hou)(hou)，通過(guo)電(dian)纜(lan)(lan)熱(re)補器施加(jia)電(dian)流，其中的(de)(de)(de)(de)電(dian)阻體開始加(jia)熱(re)。加(jia)熱(re)后(hou)(hou)的(de)(de)(de)(de)電(dian)阻體會(hui)產(chan)生高溫，使附近的(de)(de)(de)(de)絕緣材料軟(ruan)化或(huo)熔化。安(an)裝和(he)維護(hu)電(dian)纜(lan)(lan)熱(re)補器需要以下步驟(zou)：1、準備工(gong)作：首先，確定它(ta)的(de)(de)(de)(de)型號和(he)規格是否與待修復(fu)(fu)電(dian)纜(lan)(lan)相(xiang)匹配。檢(jian)查所(suo)需工(gong)具和(he)材料是否齊全(quan)，包(bao)括該儀(yi)器、隔熱(re)膠帶、導電(dian)膠水等(deng)。2、安(an)裝：在(zai)開始安(an)裝之前(qian)，確保電(dian)源已斷開，并對(dui)工(gong)作區進行安(an)全(quan)評估(gu)。清潔并處...

礦用(yong)(yong)(yong)電(dian)(dian)纜(lan)(lan)探傷儀(yi)是一種用(yong)(yong)(yong)于(yu)檢測(ce)和評估(gu)(gu)礦用(yong)(yong)(yong)電(dian)(dian)纜(lan)(lan)中潛(qian)在故障(zhang)和缺陷的設(she)備(bei)。它通過應(ying)用(yong)(yong)(yong)無損(sun)檢測(ce)技(ji)術，如高頻電(dian)(dian)磁感應(ying)、超聲(sheng)波或(huo)紅外熱成像等(deng)方(fang)法，對(dui)電(dian)(dian)纜(lan)(lan)進行掃描和分析(xi)，以確定是否存在導體斷裂、絕緣老化、接(jie)頭松動、水分滲入等(deng)問(wen)題。這些設(she)備(bei)通常由(you)專業人(ren)員在礦場(chang)或(huo)礦井(jing)中使用(yong)(yong)(yong)，以確保電(dian)(dian)纜(lan)(lan)系統的安全性和可靠性，并及時采取(qu)必要的維修(xiu)或(huo)更換措施，以避(bi)免潛(qian)在的事(shi)故和停產風險。礦用(yong)(yong)(yong)電(dian)(dian)纜(lan)(lan)探傷儀(yi)是用(yong)(yong)(yong)于(yu)檢測(ce)和評估(gu)(gu)礦用(yong)(yong)(yong)電(dian)(dian)纜(lan)(lan)中潛(qian)在故障(zhang)的設(she)備(bei)。下面是一般的使用(yong)(yong)(yong)方(fang)法：1、準(zhun)備(bei)工(gong)作：確保探傷儀(yi)處于(yu)正常狀態(tai)，并根據需要連接(jie)電(dian)(dian)...

電纜熱(re)風(feng)(feng)干燥機是一(yi)種(zhong)常用于(yu)電纜生(sheng)產和(he)(he)(he)(he)(he)維護(hu)中的(de)(de)(de)設(she)備，具有(you)快(kuai)速(su)高效的(de)(de)(de)干燥效果。正確的(de)(de)(de)操(cao)作(zuo)和(he)(he)(he)(he)(he)維護(hu)能夠確保設(she)備的(de)(de)(de)性能和(he)(he)(he)(he)(he)壽命，并提高生(sheng)產效率和(he)(he)(he)(he)(he)產品質(zhi)量。以下是使(shi)用電纜熱(re)風(feng)(feng)干燥機時需要(yao)注意(yi)的(de)(de)(de)事(shi)項：1、安全操(cao)作(zuo)：在使(shi)用之前，必須了解和(he)(he)(he)(he)(he)遵守相關安全操(cao)作(zuo)規程。確保熟悉設(she)備的(de)(de)(de)運行(xing)原(yuan)理、控(kong)制方法以及緊急停(ting)機的(de)(de)(de)程序。2、確保環境通風(feng)(feng)：干燥機產生(sheng)大(da)量的(de)(de)(de)熱(re)量和(he)(he)(he)(he)(he)濕(shi)氣，因(yin)此必須確保工作(zuo)區域(yu)具有(you)良好的(de)(de)(de)通風(feng)(feng)條件(jian)，避免(mian)過熱(re)和(he)(he)(he)(he)(he)積(ji)聚的(de)(de)(de)濕(shi)氣對設(she)備和(he)(he)(he)(he)(he)人員的(de)(de)(de)損(sun)害(hai)。3、準確設(she)置溫度和(he)(he)(he)(he)(he)時間：根據不同(tong)類型的(de)(de)(de)電纜和(he)(he)(he)(he)(he)要(yao)求，準確設(she)置熱(re)...

電(dian)(dian)(dian)(dian)纜(lan)(lan)故障測試(shi)儀是(shi)一(yi)(yi)種能夠(gou)檢測電(dian)(dian)(dian)(dian)纜(lan)(lan)故障的(de)(de)專業設備，它可(ke)(ke)以用來(lai)定位電(dian)(dian)(dian)(dian)纜(lan)(lan)中(zhong)(zhong)斷(duan)、短(duan)路、漏電(dian)(dian)(dian)(dian)等問題(ti)(ti)。在電(dian)(dian)(dian)(dian)力(li)系統中(zhong)(zhong)，電(dian)(dian)(dian)(dian)纜(lan)(lan)故障是(shi)比較(jiao)常見的(de)(de)問題(ti)(ti)，如(ru)果不及時排除，可(ke)(ke)能會對(dui)電(dian)(dian)(dian)(dian)力(li)供應造成嚴(yan)重影響，因此使(shi)用測試(shi)儀進行電(dian)(dian)(dian)(dian)纜(lan)(lan)故障診斷(duan)是(shi)非常重要(yao)的(de)(de)。工作(zuo)原理是(shi)利(li)用電(dian)(dian)(dian)(dian)磁波傳播特(te)性，通過發射(she)一(yi)(yi)定頻(pin)率(lv)的(de)(de)高(gao)壓脈沖(chong)信號(hao)(hao)，從而檢測出電(dian)(dian)(dian)(dian)纜(lan)(lan)中(zhong)(zhong)的(de)(de)故障點。當脈沖(chong)信號(hao)(hao)遇(yu)到電(dian)(dian)(dian)(dian)纜(lan)(lan)中(zhong)(zhong)的(de)(de)故障點時，會產生(sheng)(sheng)反射(she)波，通過對(dui)反射(she)波的(de)(de)分析處理，即可(ke)(ke)確定故障點的(de)(de)具體位置。該測試(shi)儀主(zhu)要(yao)由信號(hao)(hao)發生(sheng)(sheng)器(qi)(qi)、接收器(qi)(qi)和(he)顯示屏組成。其中(zhong)(zhong)信號(hao)(hao)發生(sheng)(sheng)器(qi)(qi)負責(ze)產生(sheng)(sheng)高(gao)壓脈沖(chong)...

電(dian)纜(lan)(lan)壓號機是一種專門(men)用(yong)(yong)于標(biao)識電(dian)纜(lan)(lan)的(de)(de)(de)(de)設備(bei)，它可以(yi)(yi)在電(dian)纜(lan)(lan)表面(mian)印(yin)(yin)刷數(shu)字、字母、符號等標(biao)記(ji)(ji)(ji)信息(xi)。這些標(biao)記(ji)(ji)(ji)信息(xi)對于電(dian)纜(lan)(lan)的(de)(de)(de)(de)管理(li)、維護以(yi)(yi)及故障排(pai)查非常重要。該機通常采用(yong)(yong)高(gao)溫熱轉印(yin)(yin)技術，在電(dian)纜(lan)(lan)表面(mian)印(yin)(yin)刷出所(suo)(suo)需的(de)(de)(de)(de)標(biao)記(ji)(ji)(ji)信息(xi)。這種技術具(ju)有印(yin)(yin)刷效(xiao)(xiao)果好、耐(nai)久性強、不易(yi)褪色、不易(yi)剝落(luo)等優(you)點。其工作(zuo)原理(li)可以(yi)(yi)概括(kuo)為(wei)以(yi)(yi)下幾(ji)個(ge)步驟：1、準備(bei)電(dian)纜(lan)(lan)：首先需要將(jiang)待(dai)標(biao)記(ji)(ji)(ji)的(de)(de)(de)(de)電(dian)纜(lan)(lan)清(qing)潔干凈，以(yi)(yi)確保壓號效(xiao)(xiao)果的(de)(de)(de)(de)質量(liang)。然后將(jiang)電(dian)纜(lan)(lan)放置(zhi)在壓號機的(de)(de)(de)(de)工作(zuo)區域內，調整電(dian)纜(lan)(lan)的(de)(de)(de)(de)位(wei)置(zhi)和方向。2、調整標(biao)記(ji)(ji)(ji)內容：使用(yong)(yong)控制系統中的(de)(de)(de)(de)軟件，在屏(ping)幕上輸入所(suo)(suo)需的(de)(de)(de)(de)...

高壓(ya)電(dian)(dian)(dian)纜(lan)是(shi)現代電(dian)(dian)(dian)力(li)系統(tong)中不(bu)可(ke)(ke)(ke)缺的(de)(de)(de)組成(cheng)(cheng)部分，它(ta)(ta)們(men)被(bei)用(yong)于(yu)(yu)輸送高電(dian)(dian)(dian)壓(ya)電(dian)(dian)(dian)能，以連接發電(dian)(dian)(dian)站(zhan)、變電(dian)(dian)(dian)站(zhan)和(he)負載設(she)備(bei)。由于(yu)(yu)高壓(ya)電(dian)(dian)(dian)纜(lan)通常(chang)埋在(zai)地(di)下或安裝(zhuang)在(zai)墻壁內，因此它(ta)(ta)們(men)的(de)(de)(de)維護和(he)檢(jian)修非常(chang)困(kun)難。高壓(ya)電(dian)(dian)(dian)纜(lan)可(ke)(ke)(ke)能會(hui)存在(zai)多(duo)種故障，如(ru)接頭松動、絕緣(yuan)老化、損傷(shang)等。這些(xie)故障如(ru)果(guo)不(bu)及時(shi)檢(jian)測和(he)排(pai)除，可(ke)(ke)(ke)能導(dao)致電(dian)(dian)(dian)力(li)系統(tong)的(de)(de)(de)停(ting)運(yun)，甚(shen)至造成(cheng)(cheng)事(shi)故。高壓(ya)電(dian)(dian)(dian)纜(lan)探(tan)傷(shang)儀是(shi)一(yi)種利用(yong)超(chao)聲(sheng)波、電(dian)(dian)(dian)磁波等物理(li)量進行檢(jian)測的(de)(de)(de)設(she)備(bei)，可(ke)(ke)(ke)以實現對高壓(ya)電(dian)(dian)(dian)纜(lan)內部結構的(de)(de)(de)無損檢(jian)測。它(ta)(ta)可(ke)(ke)(ke)以檢(jian)測電(dian)(dian)(dian)纜(lan)的(de)(de)(de)接頭、絕緣(yuan)、金屬套管等部位的(de)(de)(de)損傷(shang)和(he)老化情況，并(bing)可(ke)(ke)(ke)以定位故障點的(de)(de)(de)具(ju)體位...

通(tong)訊電(dian)(dian)(dian)纜(lan)故(gu)障測(ce)試儀(yi)是一種(zhong)(zhong)專(zhuan)業的(de)測(ce)試工具，用于(yu)檢(jian)測(ce)通(tong)訊電(dian)(dian)(dian)纜(lan)中存在的(de)各種(zhong)(zhong)故(gu)障和(he)問題。這些故(gu)障可(ke)能包括(kuo)接頭松動、電(dian)(dian)(dian)線(xian)(xian)斷裂、信號(hao)反射等。該儀(yi)器可(ke)以進行連(lian)續的(de)線(xian)(xian)路掃描，以確(que)定電(dian)(dian)(dian)纜(lan)中是否(fou)存在任何斷開或短路。此外，測(ce)試儀(yi)還可(ke)以測(ce)量(liang)電(dian)(dian)(dian)纜(lan)的(de)電(dian)(dian)(dian)阻、容抗和(he)電(dian)(dian)(dian)感，以便更好地了解電(dian)(dian)(dian)纜(lan)的(de)運行狀(zhuang)態。如果測(ce)試儀(yi)檢(jian)測(ce)到電(dian)(dian)(dian)纜(lan)中有任何異常，它將會提(ti)供詳細的(de)報告(gao)和(he)分析。這些報告(gao)可(ke)以幫助技術人員快速定位和(he)糾正故(gu)障，并(bing)確(que)保通(tong)訊系統正常運行。除了測(ce)試電(dian)(dian)(dian)纜(lan)本(ben)身(shen)之外，該測(ce)試儀(yi)還可(ke)用于(yu)測(ce)試其他(ta)相關設(she)備，如交換機和(he)路由器。這些測(ce)...

電(dian)(dian)纜(lan)(lan)交流耐壓(ya)(ya)(ya)(ya)機是(shi)(shi)一種(zhong)專門用于測(ce)試電(dian)(dian)纜(lan)(lan)絕緣(yuan)耐壓(ya)(ya)(ya)(ya)強(qiang)度的(de)設(she)備。在電(dian)(dian)力(li)工業、通(tong)訊工程(cheng)、航空航天、鐵路(lu)交通(tong)、石油化(hua)工等領(ling)域(yu)得(de)到(dao)廣泛的(de)應用。其核心(xin)部分是(shi)(shi)高(gao)壓(ya)(ya)(ya)(ya)變壓(ya)(ya)(ya)(ya)器和耐銳(rui)壓(ya)(ya)(ya)(ya)絕緣(yuan)測(ce)試系統。本文將(jiang)詳細介(jie)紹它的(de)工作原(yuan)理、使用方(fang)法以(yi)及主要(yao)技術指標(biao)。一、工作原(yuan)理是(shi)(shi)將(jiang)低(di)壓(ya)(ya)(ya)(ya)電(dian)(dian)源通(tong)過高(gao)壓(ya)(ya)(ya)(ya)變壓(ya)(ya)(ya)(ya)器升壓(ya)(ya)(ya)(ya)，形成高(gao)電(dian)(dian)壓(ya)(ya)(ya)(ya)，然后將(jiang)這個(ge)高(gao)電(dian)(dian)壓(ya)(ya)(ya)(ya)加(jia)到(dao)被(bei)測(ce)電(dian)(dian)纜(lan)(lan)上，觀察(cha)其絕緣(yuan)是(shi)(shi)否(fou)破損(sun)或(huo)出現擊穿現象，進而判斷電(dian)(dian)纜(lan)(lan)的(de)絕緣(yuan)性能是(shi)(shi)否(fou)符(fu)合標(biao)準要(yao)求。通(tong)常情況下，耐壓(ya)(ya)(ya)(ya)測(ce)試時應根據國家標(biao)準或(huo)合同要(yao)求制定(ding)的(de)規定(ding)來進行。二、使用方(fang)法電(dian)(dian)纜(lan)(lan)交流耐壓(ya)(ya)(ya)(ya)機使...

礦(kuang)用(yong)電(dian)(dian)(dian)纜(lan)(lan)熱(re)補(bu)(bu)機(ji)(ji)是用(yong)來(lai)修(xiu)(xiu)補(bu)(bu)礦(kuang)用(yong)電(dian)(dian)(dian)纜(lan)(lan)的(de)(de)一種(zhong)(zhong)機(ji)(ji)器。在(zai)煤礦(kuang)、金礦(kuang)、銅礦(kuang)等采礦(kuang)場所中，礦(kuang)用(yong)電(dian)(dian)(dian)纜(lan)(lan)承載著礦(kuang)山生(sheng)(sheng)產(chan)(chan)的(de)(de)重(zhong)(zhong)要(yao)任(ren)務，因此礦(kuang)用(yong)電(dian)(dian)(dian)纜(lan)(lan)的(de)(de)完好運(yun)行是礦(kuang)山生(sheng)(sheng)產(chan)(chan)和(he)安(an)全穩定運(yun)行的(de)(de)基礎。然而(er)(er)，礦(kuang)用(yong)電(dian)(dian)(dian)纜(lan)(lan)在(zai)運(yun)行過程中也會出現各種(zhong)(zhong)故障、損(sun)壞(huai)，如磨損(sun)、斷裂、接頭絕(jue)緣老化等，這些問題會嚴重(zhong)(zhong)影響(xiang)礦(kuang)山的(de)(de)生(sheng)(sheng)產(chan)(chan)效率和(he)安(an)全穩定運(yun)營。因此，采用(yong)該機(ji)(ji)進(jin)行修(xiu)(xiu)補(bu)(bu)，能(neng)(neng)夠有效地(di)提(ti)高電(dian)(dian)(dian)纜(lan)(lan)的(de)(de)品(pin)質和(he)延長使(shi)用(yong)壽命。主(zhu)要(yao)原(yuan)理是在(zai)電(dian)(dian)(dian)纜(lan)(lan)損(sun)傷部位(wei)施加高溫(wen)熱(re)源，使(shi)其與電(dian)(dian)(dian)纜(lan)(lan)進(jin)行熔合，形成牢(lao)固的(de)(de)接頭，從(cong)而(er)(er)使(shi)電(dian)(dian)(dian)纜(lan)(lan)恢復原(yuan)有的(de)(de)使(shi)用(yong)功能(neng)(neng)。同時，這種(zhong)(zhong)修(xiu)(xiu)補(bu)(bu)方(fang)式(shi)具...

電纜(lan)(lan)熱(re)補(bu)(bu)器(qi)是一(yi)種專門用(yong)(yong)(yong)于(yu)電纜(lan)(lan)缺損(sun)修復的(de)工(gong)具，多用(yong)(yong)(yong)于(yu)電線(xian)電纜(lan)(lan)、通信(xin)、動力等行業(ye)。它通過利(li)用(yong)(yong)(yong)高溫加熱(re)使損(sun)壞(huai)的(de)電纜(lan)(lan)絕緣(yuan)(yuan)材(cai)料(liao)(liao)在(zai)短時間內熔(rong)化，與(yu)(yu)補(bu)(bu)補(bu)(bu)材(cai)料(liao)(liao)形成一(yi)體，從而達(da)到(dao)修復的(de)目(mu)的(de)。下面本文將為大家詳(xiang)細介紹它的(de)原(yuan)(yuan)理、使用(yong)(yong)(yong)方(fang)法(fa)及其(qi)優勢。一(yi)、原(yuan)(yuan)理是利(li)用(yong)(yong)(yong)高溫熔(rong)化絕緣(yuan)(yuan)材(cai)料(liao)(liao)，然后再(zai)用(yong)(yong)(yong)補(bu)(bu)補(bu)(bu)材(cai)料(liao)(liao)加以填(tian)充，讓絕緣(yuan)(yuan)材(cai)料(liao)(liao)與(yu)(yu)補(bu)(bu)補(bu)(bu)材(cai)料(liao)(liao)結合一(yi)起。其(qi)熱(re)補(bu)(bu)原(yuan)(yuan)理是利(li)用(yong)(yong)(yong)熱(re)風槍向(xiang)損(sun)壞(huai)處(chu)噴出高溫氣流，將絕緣(yuan)(yuan)材(cai)料(liao)(liao)加熱(re)至熔(rong)點后迅速加入(ru)補(bu)(bu)補(bu)(bu)材(cai)料(liao)(liao)。二、使用(yong)(yong)(yong)方(fang)法(fa)1、檢查損(sun)壞(huai)處(chu)：需要先(xian)檢查線(xian)纜(lan)(lan)損(sun)壞(huai)處(chu)，確定損(sun)壞(huai)程度(du)和位置。2、清(qing)理工(gong)作：...