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沙坪壩高品質通風設備價格

2020-08-07
沙坪壩高品質通風設備價格

1、適(shi)用于(yu)(yu)(yu)大(da)小賓館、酒樓(lou)、飯店、飯堂等(deng)(deng)場(chang)所(suo)(suo)(suo)(suo)的(de)(de)廚房抽排(pai)油煙和(he)(he)火煙和(he)(he)通(tong)風系統配(pei)套(tao)使(shi)用。2、適(shi)用于(yu)(yu)(yu)辦公大(da)樓(lou)、商(shang)場(chang)、影(ying)劇院、醫(yi)院、工廠企業車間、地下室等(deng)(deng)場(chang)所(suo)(suo)(suo)(suo)通(tong)風排(pai)氣。3、適(shi)用于(yu)(yu)(yu)所(suo)(suo)(suo)(suo)有工作場(chang)所(suo)(suo)(suo)(suo)的(de)(de)空(kong)調(diao)冷(leng)氣工程。4、風機(ji)(ji)輸送的(de)(de)應為不(bu)(bu)含粘性(xing)物(wu)質(zhi)(zhi)(zhi)的(de)(de)氣體(ti),且氣體(ti)溫(wen)度不(bu)(bu)大(da)于(yu)(yu)(yu)80OC,介質(zhi)(zhi)(zhi)所(suo)(suo)(suo)(suo)含物(wu)質(zhi)(zhi)(zhi)量(liang)不(bu)(bu)大(da)于(yu)(yu)(yu)150mg/M3。水膜濾清(qing)器(qi)和(he)(he)靜電(dian)油煙凈化器(qi)經凈化后排(pai)放的(de)(de)物(wu)質(zhi)(zhi)(zhi)含量(liang)不(bu)(bu)大(da)于(yu)(yu)(yu)2.0mg/M3。5、風機(ji)(ji)廣泛用于(yu)(yu)(yu)工廠、礦井、隧道(dao)、冷(leng)卻塔、車輛、船舶和(he)(he)建(jian)筑(zhu)物(wu)的(de)(de)通(tong)風、排(pai)塵(chen)和(he)(he)冷(leng)卻;6、鍋爐和(he)(he)工業爐窯(yao)的(de)(de)通(tong)風和(he)(he)引風;空(kong)氣調(diao)節設備和(he)(he)家用電(dian)器(qi)設備中的(de)(de)冷(leng)卻和(he)(he)通(tong)風;7、谷物(wu)的(de)(de)烘干和(he)(he)選送;風洞(dong)風源和(he)(he)氣墊船的(de)(de)充氣和(he)(he)推進等(deng)(deng)。

沙坪壩高品質通風設備價格

一、通(tong)風(feng)(feng)(feng)(feng)(feng)(feng)與(yu)空(kong)(kong)(kong)調(diao)(diao)(diao)系(xi)(xi)(xi)(xi)統(tong)的(de)組(zu)成(cheng)(cheng)與(yu)類(lei)別(一)通(tong)風(feng)(feng)(feng)(feng)(feng)(feng)系(xi)(xi)(xi)(xi)統(tong)的(de)組(zu)成(cheng)(cheng),包(bao)(bao)括(kuo):進(jin)氣(qi)處(chu)(chu)(chu)理設(she)(she)備,如空(kong)(kong)(kong)氣(qi)過(guo)濾(lv)設(she)(she)備、熱(re)濕(shi)處(chu)(chu)(chu)理設(she)(she)備和空(kong)(kong)(kong)氣(qi)凈化(hua)設(she)(she)備等;送風(feng)(feng)(feng)(feng)(feng)(feng)機或排風(feng)(feng)(feng)(feng)(feng)(feng)機;風(feng)(feng)(feng)(feng)(feng)(feng)道系(xi)(xi)(xi)(xi)統(tong),如風(feng)(feng)(feng)(feng)(feng)(feng)管(guan)(guan)、送風(feng)(feng)(feng)(feng)(feng)(feng)口(kou)、排風(feng)(feng)(feng)(feng)(feng)(feng)口(kou)、排氣(qi)罩等;排氣(qi)處(chu)(chu)(chu)理設(she)(she)備,如除塵器、有(you)(you)害氣(qi)體凈化(hua)設(she)(she)備、風(feng)(feng)(feng)(feng)(feng)(feng)帽等。2.通(tong)風(feng)(feng)(feng)(feng)(feng)(feng)系(xi)(xi)(xi)(xi)統(tong)的(de)類(lei)別有(you)(you):(二)空(kong)(kong)(kong)調(diao)(diao)(diao)系(xi)(xi)(xi)(xi)統(tong)的(de)組(zu)成(cheng)(cheng)——空(kong)(kong)(kong)氣(qi)處(chu)(chu)(chu)理設(she)(she)備、熱(re)源(yuan)和冷(leng)(leng)(leng)源(yuan)、空(kong)(kong)(kong)調(diao)(diao)(diao)風(feng)(feng)(feng)(feng)(feng)(feng)系(xi)(xi)(xi)(xi)統(tong)、水(shui)(shui)(shui)(shui)系(xi)(xi)(xi)(xi)統(tong)、控制(zhi)、調(diao)(diao)(diao)節裝置(zhi)(1)空(kong)(kong)(kong)氣(qi)處(chu)(chu)(chu)理設(she)(she)備:空(kong)(kong)(kong)氣(qi)加熱(re)或冷(leng)(leng)(leng)卻設(she)(she)備、空(kong)(kong)(kong)氣(qi)加濕(shi)或去濕(shi)設(she)(she)備和空(kong)(kong)(kong)氣(qi)凈化(hua)設(she)(she)備等;其(qi)作用(yong)是(shi)將(jiang)送風(feng)(feng)(feng)(feng)(feng)(feng)空(kong)(kong)(kong)氣(qi)處(chu)(chu)(chu)理到(dao)一定的(de)狀態(tai)。(2)熱(re)源(yuan)和冷(leng)(leng)(leng)源(yuan):常用(yong)的(de)熱(re)源(yuan)有(you)(you)提(ti)供熱(re)水(shui)(shui)(shui)(shui)或蒸汽的(de)鍋(guo)爐、電加熱(re)器等。(3)空(kong)(kong)(kong)調(diao)(diao)(diao)風(feng)(feng)(feng)(feng)(feng)(feng)系(xi)(xi)(xi)(xi)統(tong):由風(feng)(feng)(feng)(feng)(feng)(feng)機和風(feng)(feng)(feng)(feng)(feng)(feng)管(guan)(guan)系(xi)(xi)(xi)(xi)統(tong)組(zu)成(cheng)(cheng)。(4)水(shui)(shui)(shui)(shui)系(xi)(xi)(xi)(xi)統(tong):包(bao)(bao)括(kuo)將(jiang)冷(leng)(leng)(leng)凍水(shui)(shui)(shui)(shui)(或熱(re)水(shui)(shui)(shui)(shui))從(cong)制(zhi)冷(leng)(leng)(leng)系(xi)(xi)(xi)(xi)統(tong)(或熱(re)源(yuan))輸送到(dao)空(kong)(kong)(kong)氣(qi)處(chu)(chu)(chu)理設(she)(she)備的(de)水(shui)(shui)(shui)(shui)系(xi)(xi)(xi)(xi)統(tong)和制(zhi)冷(leng)(leng)(leng)設(she)(she)備的(de)冷(leng)(leng)(leng)卻水(shui)(shui)(shui)(shui)系(xi)(xi)(xi)(xi)統(tong),由水(shui)(shui)(shui)(shui)泵和水(shui)(shui)(shui)(shui)管(guan)(guan)系(xi)(xi)(xi)(xi)統(tong)組(zu)成(cheng)(cheng)。(5)控制(zhi)、調(diao)(diao)(diao)節裝置(zhi):裝置(zhi)的(de)作用(yong)是(shi)調(diao)(diao)(diao)節空(kong)(kong)(kong)調(diao)(diao)(diao)系(xi)(xi)(xi)(xi)統(tong)的(de)冷(leng)(leng)(leng)量、熱(re)量、風(feng)(feng)(feng)(feng)(feng)(feng)量等,使空(kong)(kong)(kong)調(diao)(diao)(diao)系(xi)(xi)(xi)(xi)統(tong)的(de)工作適應空(kong)(kong)(kong)調(diao)(diao)(diao)工況的(de)變化(hua),從(cong)而將(jiang)室內空(kong)(kong)(kong)氣(qi)狀況控制(zhi)在要求的(de)范圍(wei)內。

沙坪壩高品質通風設備價格

一(yi)、風(feng)(feng)管(guan)(guan)(guan)及部(bu)件安(an)(an)(an)裝(zhuang)(zhuang)的有(you)關(guan)規(gui)定1.風(feng)(feng)管(guan)(guan)(guan)安(an)(an)(an)裝(zhuang)(zhuang)的強制規(gui)定,當(dang)風(feng)(feng)管(guan)(guan)(guan)穿過(guo)需要(yao)(yao)封閉的防(fang)火(huo)、防(fang)爆墻(qiang)體或樓板時(shi),應(ying)設(she)預(yu)埋管(guan)(guan)(guan)或防(fang)護套(tao)(tao)管(guan)(guan)(guan)。套(tao)(tao)管(guan)(guan)(guan)鋼(gang)板厚度(du)不(bu)應(ying)小于1.6mm,風(feng)(feng)管(guan)(guan)(guan)與防(fang)護套(tao)(tao)管(guan)(guan)(guan)之間應(ying)用不(bu)燃(ran)(ran)且(qie)對人體無(wu)害的柔性材料封堵,風(feng)(feng)道應(ying)安(an)(an)(an)裝(zhuang)(zhuang)設(she)防(fang)火(huo)閥。風(feng)(feng)管(guan)(guan)(guan)內嚴禁(jin)各種(zhong)管(guan)(guan)(guan)道、電線敷設(she)及穿越;輸送含有(you)易(yi)燃(ran)(ran)易(yi)爆氣體或安(an)(an)(an)裝(zhuang)(zhuang)在易(yi)燃(ran)(ran)易(yi)爆環(huan)境(jing)的風(feng)(feng)管(guan)(guan)(guan)系統,應(ying)有(you)良好(hao)(hao)的接地,通過(guo)生(sheng)活(huo)區(qu)、生(sheng)產(chan)房間時(shi)必須嚴密(mi),不(bu)得設(she)接口;室外主管(guan)(guan)(guan)的固定拉(la)索嚴禁(jin)拉(la)在避雷針或避雷網上。輸送溫度(du)高(gao)于80℃的空氣的風(feng)(feng)管(guan)(guan)(guan),應(ying)按設(she)計(ji)要(yao)(yao)求(qiu)采取防(fang)護措(cuo)施(shi)。2.風(feng)(feng)管(guan)(guan)(guan)安(an)(an)(an)裝(zhuang)(zhuang)的一(yi)般(ban)規(gui)定風(feng)(feng)管(guan)(guan)(guan)安(an)(an)(an)裝(zhuang)(zhuang)宜在建筑圍(wei)護結(jie)構(gou)施(shi)工完畢(bi)、場所清理后進行。凈化(hua)空調風(feng)(feng)管(guan)(guan)(guan)應(ying)在安(an)(an)(an)裝(zhuang)(zhuang)部(bu)位地面做好(hao)(hao),墻(qiang)面抹(mo)灰工序完畢(bi),室內無(wu)飛(fei)塵(chen)或有(you)防(fang)塵(chen)措(cuo)施(shi)后進行。安(an)(an)(an)裝(zhuang)(zhuang)風(feng)(feng)管(guan)(guan)(guan)前應(ying)清除管(guan)(guan)(guan)內外雜物,并(bing)做好(hao)(hao)清潔和保護工作,風(feng)(feng)管(guan)(guan)(guan)安(an)(an)(an)裝(zhuang)(zhuang)的位置、標高(gao)和走(zou)向等(deng)應(ying)符合設(she)計(ji)要(yao)(yao)求(qiu),現場風(feng)(feng)管(guan)(guan)(guan)接口的配置不(bu)得縮小有(you)效截面。

沙坪壩高品質通風設備價格

1安裝好采用水平聯通(tong)(tong)的方式(shi)。操作簡單,使(shi)用安全(quan)(quan)(quan)(quan)范(fan)圍(wei)廣。有(you)人(ren)說(shuo),我方式(shi)也養(yang)好雞(ji)(ji),我只(zhi)能說(shuo)沒有(you)養(yang)不(bu)(bu)好雞(ji)(ji)的雞(ji)(ji)舍(she),只(zhi)有(you)養(yang)不(bu)(bu)好雞(ji)(ji)的人(ren)。合理設計(ji)(ji)本(ben)身是(shi)為(wei)了減(jian)小(xiao)(xiao)勞動量(liang)的!2開(kai)(kai)口大(da)(da)小(xiao)(xiao)與數(shu)量(liang)。建議(yi)(yi)等(deng)于風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)管(guan)(guan)橫截面積(ji),按(an)照(zhao)管(guan)(guan)子內(nei)徑實際有(you)效(xiao)面積(ji)計(ji)(ji)算。開(kai)(kai)口大(da)(da)小(xiao)(xiao)不(bu)(bu)敢妄(wang)言,開(kai)(kai)口越(yue)小(xiao)(xiao),所需開(kai)(kai)口數(shu)量(liang)越(yue)多,出(chu)風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)越(yue)細(xi)越(yue)散越(yue)均勻,但沖(chong)勁不(bu)(bu)足(zu)(zu)(zu),降(jiang)低負壓(ya)減(jian)緩風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)速相(xiang)(xiang)對更(geng)安全(quan)(quan)(quan)(quan)。開(kai)(kai)口越(yue)大(da)(da),進風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)越(yue)厚,沖(chong)勁越(yue)足(zu)(zu)(zu),相(xiang)(xiang)對可以提高負壓(ya)工(gong)作,同樣配(pei)置(zhi)風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)管(guan)(guan)數(shu)量(liang),安全(quan)(quan)(quan)(quan)范(fan)圍(wei)內(nei)滿足(zu)(zu)(zu)更(geng)多進風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)量(liang)。(主要是(shi)冷風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)緩沖(chong)范(fan)圍(wei)廣了)3配(pei)置(zhi)方式(shi)。根據(ju)(ju)不(bu)(bu)同雞(ji)(ji)舍(she)養(yang)殖(zhi)數(shu)量(liang)、大(da)(da)小(xiao)(xiao)等(deng)兩種配(pei)置(zhi)方式(shi)。一是(shi)根據(ju)(ju)冬季(ji)大(da)(da)的小(xiao)(xiao)通(tong)(tong)風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)量(liang),配(pei)置(zhi)足(zu)(zu)(zu)夠(gou)(gou)風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)管(guan)(guan)數(shu)量(liang),在(zai)(zai)冬季(ji)養(yang)殖(zhi)過程中完全(quan)(quan)(quan)(quan)不(bu)(bu)開(kai)(kai)啟(qi)通(tong)(tong)風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)窗,只(zhi)用風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)管(guan)(guan)通(tong)(tong)風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)。二是(shi)根據(ju)(ju)風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)機(ji)大(da)(da)小(xiao)(xiao)配(pei)比通(tong)(tong)風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)管(guan)(guan),但不(bu)(bu)建議(yi)(yi)大(da)(da)雞(ji)(ji)舍(she)滿足(zu)(zu)(zu)小(xiao)(xiao)風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)機(ji)的配(pei)比,此時小(xiao)(xiao)通(tong)(tong)風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)在(zai)(zai)風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)管(guan)(guan)不(bu)(bu)夠(gou)(gou)用時,開(kai)(kai)啟(qi)通(tong)(tong)風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)窗,過渡時機(ji)、操作方式(shi)不(bu)(bu)好掌握(wo),難(nan)度高,容(rong)易(yi)出(chu)問題。如果配(pei)置(zhi)風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)管(guan)(guan)足(zu)(zu)(zu)夠(gou)(gou),外界溫度持續升(sheng)高,用到溫控降(jiang)溫模式(shi)下,開(kai)(kai)啟(qi)側窗通(tong)(tong)風(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng),相(xiang)(xiang)對時機(ji)更(geng)好,更(geng)安全(quan)(quan)(quan)(quan)。

沙坪壩高品質通風設備價格

什么是(shi)風(feng)(feng)(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan),常見(jian)風(feng)(feng)(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)有(you)哪(na)些類型(xing),風(feng)(feng)(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)主要指中央(yang)空(kong)(kong)調系(xi)統(tong)的(de)通(tong)風(feng)(feng)(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)道,它常常被(bei)忽(hu)視(shi),但卻是(shi)空(kong)(kong)調系(xi)統(tong)的(de)重要組成(cheng)部(bu)分。風(feng)(feng)(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)是(shi)由薄鋼(gang)板(ban)、鋁板(ban)、硬聚(ju)氯(lv)(lv)乙烯板(ban)、玻(bo)璃鋼(gang)以及(ji)其它復合材料(liao)等(deng)(deng)制(zhi)成(cheng)的(de),用于輸送空(kong)(kong)氣(qi)和空(kong)(kong)氣(qi)混合物的(de)各種管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)道的(de)總稱。1、按(an)照材質可(ke)分為(wei)(wei):金(jin)屬(shu)風(feng)(feng)(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)、非金(jin)屬(shu)風(feng)(feng)(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)。其中:(1)金(jin)屬(shu)風(feng)(feng)(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)又可(ke)分為(wei)(wei):鋼(gang)板(ban)風(feng)(feng)(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)、鋁板(ban)風(feng)(feng)(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)、不銹(xiu)鋼(gang)風(feng)(feng)(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)等(deng)(deng);(2)非金(jin)屬(shu)風(feng)(feng)(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)可(ke)以分為(wei)(wei):硬聚(ju)氯(lv)(lv)乙烯風(feng)(feng)(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)、有(you)機(ji)玻(bo)璃風(feng)(feng)(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)、無(wu)機(ji)玻(bo)璃風(feng)(feng)(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)、玻(bo)璃鋼(gang)風(feng)(feng)(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)以及(ji)其它復合材料(liao)風(feng)(feng)(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)等(deng)(deng);2、按(an)照風(feng)(feng)(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)外形可(ke)分為(wei)(wei):圓(yuan)形風(feng)(feng)(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)、矩形風(feng)(feng)(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan);3、按(an)照通(tong)風(feng)(feng)(feng)(feng)(feng)(feng)空(kong)(kong)調系(xi)統(tong)工作壓力(li)可(ke)分為(wei)(wei):高(gao)壓風(feng)(feng)(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)、中壓風(feng)(feng)(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)、低壓風(feng)(feng)(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)三個(ge)類別,

沙坪壩高品質通風設備價格

消防排煙風機廠家產品由多個配件構成,比如說葉輪、機殼、軸承、主軸等等構成,而通風設備不同的配件也起著不同的作用。首先對于葉輪而言,一般采用優質鍍鋅板制作而成的葉片,通過傾斜設計,與拉伸成型的前盤一起形成了更合理的流道,從而保證了葉輪的高效率。而軸承是帶鑄造座的外球面軸承,可以通過外球面配合調整同軸度的誤差。主軸一般采用45#鋼經調制處理后精車而成,保證足夠的光潔度和尺寸精。另外兩層板內部填充消聲材料,高品質通風設備能更有效(xiao)隔熱降噪。消防(fang)排煙風(feng)(feng)(feng)機不(bu)能距離隧道(dao)(dao)(dao)的(de)邊壁太近,避免影響通(tong)(tong)(tong)風(feng)(feng)(feng)效(xiao)果。通(tong)(tong)(tong)風(feng)(feng)(feng)系統從安全隧道(dao)(dao)(dao)向通(tong)(tong)(tong)過橫(heng)通(tong)(tong)(tong)道(dao)(dao)(dao)向事故(gu)隧道(dao)(dao)(dao)方向送風(feng)(feng)(feng),抑制煙氣進入(ru)(ru)橫(heng)通(tong)(tong)(tong)道(dao)(dao)(dao)及未發生事故(gu)的(de)隧道(dao)(dao)(dao),滿足疏散人員(yuan)迎(ying)著新(xin)風(feng)(feng)(feng)進入(ru)(ru)橫(heng)通(tong)(tong)(tong)道(dao)(dao)(dao)和(he)(he)安全隧道(dao)(dao)(dao)內(nei),同時(shi)保證(zheng)等待區域(yu)所需要的(de)新(xin)鮮空(kong)氣。充分利用定(ding)點(dian)救援(yuan)站處的(de)斜井和(he)(he)隧道(dao)(dao)(dao)兩端的(de)消防(fang)排煙風(feng)(feng)(feng)機作為送入(ru)(ru)新(xin)風(feng)(feng)(feng)和(he)(he)排煙的(de)通(tong)(tong)(tong)道(dao)(dao)(dao),通(tong)(tong)(tong)風(feng)(feng)(feng)必須維持橫(heng)通(tong)(tong)(tong)道(dao)(dao)(dao)口處于(yu)正壓狀態(tai),防(fang)止煙氣流向通(tong)(tong)(tong)道(dao)(dao)(dao)內(nei)。

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