南京五聯控制臺生產廠家
調(diao)度操(cao)作臺(tai)設(she)(she)(she)計(ji)與(yu)(yu)(yu)(yu)布局(1)調(diao)度控制(zhi)(zhi)臺(tai)的設(she)(she)(she)計(ji)結(jie)合(he)招標人的實際情況,布局合(he)理(li)、美觀、可(ke)用性(xing)高,符合(he)安全規范(fan)以及(ji)人體(ti)工學方(fang)(fang)面的要求,配(pei)置(zhi)應依照調(diao)控中心(xin)的實際面積、尺寸以及(ji)空間布局的合(he)理(li)性(xing)進行設(she)(she)(she)計(ji),并且應考慮到與(yu)(yu)(yu)(yu)整個環境的協調(diao)性(xing)。(2)調(diao)度控制(zhi)(zhi)臺(tai)安裝(zhuang)與(yu)(yu)(yu)(yu)維護的靈(ling)活性(xing),整體(ti)采用組合(he)式設(she)(she)(she)計(ji),方(fang)(fang)便拆(chai)卸與(yu)(yu)(yu)(yu)將(jiang)來的擴展(zhan),(3)內(nei)(nei)部結(jie)構具有(you)較大(da)的可(ke)調(diao)整性(xing),輔(fu)有(you)專(zhuan)業(ye)的各式設(she)(she)(she)備承托架(jia)及(ji)內(nei)(nei)配(pei)件,使安裝(zhuang)與(yu)(yu)(yu)(yu)調(diao)整更(geng)加方(fang)(fang)便。(4)調(diao)度控制(zhi)(zhi)臺(tai)內(nei)(nei)部框(kuang)架(jia)有(you)線纜通(tong)孔,或(huo)者(zhe)同等的線纜管理(li)系統,可(ke)在(zai)不同的位置(zhi)以使布線方(fang)(fang)便有(you)序。高壓柜(ju)常州市博奧電器設(she)(she)(she)備專(zhuan)業(ye)供應!南京五聯控制(zhi)(zhi)臺(tai)生產廠(chang)家(jia)
控(kong)(kong)(kong)(kong)(kong)(kong)制臺(tai)(tai)應(ying)用(yong)范圍非(fei)常廣,涵蓋電(dian)力生(sheng)產和(he)電(dian)力調度(du)(du)中(zhong)(zhong)心(xin)(xin)(xin)(xin),核工業設(she)施運行中(zhong)(zhong)心(xin)(xin)(xin)(xin),能源生(sheng)產中(zhong)(zhong)心(xin)(xin)(xin)(xin),交通(tong)運行監(jian)控(kong)(kong)(kong)(kong)(kong)(kong)中(zhong)(zhong)心(xin)(xin)(xin)(xin),航(hang)空(kong)航(hang)天任(ren)務(wu)監(jian)控(kong)(kong)(kong)(kong)(kong)(kong)中(zhong)(zhong)心(xin)(xin)(xin)(xin),公共安全任(ren)務(wu)監(jian)控(kong)(kong)(kong)(kong)(kong)(kong)中(zhong)(zhong)心(xin)(xin)(xin)(xin),金(jin)融(rong)交易中(zhong)(zhong)心(xin)(xin)(xin)(xin)監(jian)控(kong)(kong)(kong)(kong)(kong)(kong)中(zhong)(zhong)心(xin)(xin)(xin)(xin),廣播電(dian)視監(jian)控(kong)(kong)(kong)(kong)(kong)(kong)中(zhong)(zhong)心(xin)(xin)(xin)(xin),工廠中(zhong)(zhong)控(kong)(kong)(kong)(kong)(kong)(kong)室等等非(fei)常多的(de)(de)(de)應(ying)用(yong)場景,這些(xie)類型的(de)(de)(de)控(kong)(kong)(kong)(kong)(kong)(kong)制室,監(jian)控(kong)(kong)(kong)(kong)(kong)(kong)中(zhong)(zhong)心(xin)(xin)(xin)(xin),控(kong)(kong)(kong)(kong)(kong)(kong)制中(zhong)(zhong)心(xin)(xin)(xin)(xin)都(dou)(dou)屬于關鍵任(ren)務(wu)控(kong)(kong)(kong)(kong)(kong)(kong)制環境(MissionCriticalControlEnvironment),影(ying)響著經濟與(yu)社會的(de)(de)(de)有(you)序(xu)運作。控(kong)(kong)(kong)(kong)(kong)(kong)制臺(tai)(tai)外觀具有(you)操作的(de)(de)(de)單獨性,控(kong)(kong)(kong)(kong)(kong)(kong)制臺(tai)(tai)由做控(kong)(kong)(kong)(kong)(kong)(kong)制臺(tai)(tai)設(she)計和(he)研發的(de)(de)(de)團(tuan)隊(dui)進行設(she)計和(he)生(sheng)產,具有(you)美觀、大(da)氣、簡捷(jie)、實(shi)用(yong)的(de)(de)(de)特點。臺(tai)(tai)面(mian)及框(kuang)架結構(gou)具有(you)多種顏色可選搭配;應(ying)避免外表面(mian)顯(xian)眼(yan)處有(you)鏍釘(ding)鉚釘(ding)眼(yan)出現(xian)。控(kong)(kong)(kong)(kong)(kong)(kong)制臺(tai)(tai)設(she)計考慮辦(ban)公的(de)(de)(de)相(xiang)對單獨性,每個席位左右都(dou)(dou)可以方便。每個工作臺(tai)(tai)面(mian)應(ying)該(gai)都(dou)(dou)有(you)足夠的(de)(de)(de)深度(du)(du),以運行人員辦(ban)公時文件或鍵盤等可以方便的(de)(de)(de)推進擺放。常州常博(bo)控(kong)(kong)(kong)(kong)(kong)(kong)制臺(tai)(tai)全國直銷雙聯監(jian)控(kong)(kong)(kong)(kong)(kong)(kong)臺(tai)(tai)常州市(shi)博(bo)奧電(dian)器(qi)設(she)備(bei)專業供應(ying)!
金(jin)屬(shu)板(ban)材加(jia)工(gong)就(jiu)(jiu)叫(jiao)鈑金(jin)加(jia)工(gong)。具體譬如利用板(ban)材制作煙囪、鐵(tie)桶(tong)、油箱(xiang)油壺、通風管(guan)道、彎頭大小頭、天圓地方、漏斗形(xing)等,主(zhu)要工(gong)序有(you)剪切(qie)、折彎扣邊、彎曲(qu)成(cheng)(cheng)型、焊接(jie)、鉚(liu)接(jie)等,需(xu)要一(yi)(yi)定幾何知(zhi)識。鈑金(jin)件(jian)(jian)就(jiu)(jiu)是(shi)(shi)薄板(ban)五金(jin)件(jian)(jian),也(ye)就(jiu)(jiu)是(shi)(shi)可(ke)以(yi)通過沖壓(ya),彎曲(qu),拉伸(shen)等手段來(lai)加(jia)工(gong)的(de)(de)零(ling)件(jian)(jian),一(yi)(yi)個(ge)大體的(de)(de)定義就(jiu)(jiu)是(shi)(shi)在(zai)加(jia)工(gong)過程中厚度不(bu)(bu)變的(de)(de)零(ling)件(jian)(jian)。相對應的(de)(de)是(shi)(shi)鑄造件(jian)(jian),鍛壓(ya)件(jian)(jian),機械加(jia)工(gong)零(ling)件(jian)(jian)等[1]。鈑金(jin)加(jia)工(gong)一(yi)(yi)般用到的(de)(de)材料(liao)有(you)冷軋板(ban)(SPCC)、熱軋板(ban)(SHCC)、鍍鋅板(ban)(SECC、SGCC),銅(CU)黃銅、紫銅、鈹銅,鋁板(ban)(6061、5052、1010、1060、6063、硬鋁等),不(bu)(bu)銹(xiu)鋼(鏡面(mian)、拉絲面(mian)、霧面(mian)),根(gen)據產(chan)品作用不(bu)(bu)同(tong),選(xuan)用材料(liao)不(bu)(bu)同(tong),一(yi)(yi)般需(xu)從(cong)產(chan)品其用途及成(cheng)(cheng)本上來(lai)考慮。
多(duo)(duo)(duo)(duo)(duo)(duo)功能(neng)講(jiang)(jiang)(jiang)(jiang)臺(tai)(tai)(tai)(tai)(tai)(tai)的(de)(de)別名列舉如下:電(dian)(dian)(dian)教(jiao)平(ping)(ping)(ping)臺(tai)(tai)(tai)(tai)(tai)(tai)、多(duo)(duo)(duo)(duo)(duo)(duo)媒(mei)體(ti)講(jiang)(jiang)(jiang)(jiang)臺(tai)(tai)(tai)(tai)(tai)(tai)、電(dian)(dian)(dian)教(jiao)臺(tai)(tai)(tai)(tai)(tai)(tai)、多(duo)(duo)(duo)(duo)(duo)(duo)媒(mei)體(ti)電(dian)(dian)(dian)子講(jiang)(jiang)(jiang)(jiang)臺(tai)(tai)(tai)(tai)(tai)(tai)、多(duo)(duo)(duo)(duo)(duo)(duo)媒(mei)體(ti)教(jiao)學(xue)講(jiang)(jiang)(jiang)(jiang)臺(tai)(tai)(tai)(tai)(tai)(tai)、電(dian)(dian)(dian)子講(jiang)(jiang)(jiang)(jiang)臺(tai)(tai)(tai)(tai)(tai)(tai)、多(duo)(duo)(duo)(duo)(duo)(duo)媒(mei)體(ti)教(jiao)室講(jiang)(jiang)(jiang)(jiang)臺(tai)(tai)(tai)(tai)(tai)(tai)、多(duo)(duo)(duo)(duo)(duo)(duo)媒(mei)體(ti)中控(kong)(kong)臺(tai)(tai)(tai)(tai)(tai)(tai)、控(kong)(kong)制(zhi)臺(tai)(tai)(tai)(tai)(tai)(tai)、多(duo)(duo)(duo)(duo)(duo)(duo)功能(neng)多(duo)(duo)(duo)(duo)(duo)(duo)媒(mei)體(ti)講(jiang)(jiang)(jiang)(jiang)臺(tai)(tai)(tai)(tai)(tai)(tai)、中控(kong)(kong)臺(tai)(tai)(tai)(tai)(tai)(tai)、電(dian)(dian)(dian)教(jiao)室平(ping)(ping)(ping)臺(tai)(tai)(tai)(tai)(tai)(tai)、鋼制(zhi)多(duo)(duo)(duo)(duo)(duo)(duo)媒(mei)體(ti)計臺(tai)(tai)(tai)(tai)(tai)(tai)、多(duo)(duo)(duo)(duo)(duo)(duo)媒(mei)體(ti)控(kong)(kong)制(zhi)臺(tai)(tai)(tai)(tai)(tai)(tai)、多(duo)(duo)(duo)(duo)(duo)(duo)媒(mei)體(ti)電(dian)(dian)(dian)教(jiao)臺(tai)(tai)(tai)(tai)(tai)(tai)。現代(dai)化教(jiao)育,將計算機(ji)(ji)技(ji)術和(he)通信技(ji)術引(yin)入教(jiao)學(xue)各(ge)個(ge)環(huan)節,從而引(yin)發了教(jiao)學(xue)方(fang)法,教(jiao)學(xue)工具的(de)(de)重(zhong)大革(ge)新(xin).這些變革(ge)對提(ti)高教(jiao)學(xue)質量(liang),推(tui)動教(jiao)育現代(dai)化的(de)(de)發展起著(zhu)不可估量(liang)的(de)(de)作用.我國各(ge)級教(jiao)育研究部門(men),教(jiao)學(xue)設(she)(she)備(bei)供(gong)應商,各(ge)級學(xue)校和(he)培訓(xun)中心已組(zu)建或正擬組(zu)建涵蓋多(duo)(duo)(duo)(duo)(duo)(duo)個(ge)學(xue)科(ke)的(de)(de)多(duo)(duo)(duo)(duo)(duo)(duo)媒(mei)體(ti)計算機(ji)(ji)教(jiao)學(xue)網絡(luo).多(duo)(duo)(duo)(duo)(duo)(duo)功能(neng)講(jiang)(jiang)(jiang)(jiang)臺(tai)(tai)(tai)(tai)(tai)(tai)按照其設(she)(she)計和(he)使用方(fang)式的(de)(de)不同(tong)分為(wei):上翻(fan)后(hou)推(tui)型講(jiang)(jiang)(jiang)(jiang)臺(tai)(tai)(tai)(tai)(tai)(tai)、雙層(ceng)平(ping)(ping)(ping)推(tui)型講(jiang)(jiang)(jiang)(jiang)臺(tai)(tai)(tai)(tai)(tai)(tai)、單(dan)層(ceng)平(ping)(ping)(ping)推(tui)型講(jiang)(jiang)(jiang)(jiang)臺(tai)(tai)(tai)(tai)(tai)(tai)。數控(kong)(kong)加工常州市博奧(ao)電(dian)(dian)(dian)器設(she)(she)備(bei)專業供(gong)應!
熱(re)浸鍍鋅鋼(gang)(gang)(gang)板SGCC熱(re)浸鍍鋅鋼(gang)(gang)(gang)卷(juan)是指將熱(re)軋(ya)酸洗(xi)或冷軋(ya)后之半成品,經過清洗(xi)、退火,浸入溫(wen)度(du)約(yue)460°C的(de)溶(rong)融鋅槽中(zhong),而使(shi)鋼(gang)(gang)(gang)片(pian)(pian)鍍上鋅層,再經調質(zhi)整平及化(hua)學處理而成。SGCC材(cai)料比SECC材(cai)料硬、延展性(xing)(xing)差(cha)(避免深抽設計)、鋅層較厚、電焊性(xing)(xing)差(cha)。4.不(bu)(bu)銹(xiu)(xiu)鋼(gang)(gang)(gang)SUS304使(shi)用(yong)的(de)不(bu)(bu)銹(xiu)(xiu)鋼(gang)(gang)(gang)之一,因含Ni(鎳(nie))故比含Cr(鉻(ge))的(de)鋼(gang)(gang)(gang)較富有(you)(you)耐(nai)(nai)蝕性(xing)(xing)、耐(nai)(nai)熱(re)性(xing)(xing),擁有(you)(you)非(fei)常好(hao)的(de)機械性(xing)(xing)能,無(wu)熱(re)處理硬化(hua)現象,沒有(you)(you)彈性(xing)(xing)。5.不(bu)(bu)銹(xiu)(xiu)鋼(gang)(gang)(gang)SUS301Cr(鉻(ge))的(de)含量較SUS304低,耐(nai)(nai)蝕性(xing)(xing)較差(cha),但經過冷加(jia)工在沖(chong)壓加(jia)工中(zhong)能獲(huo)得很好(hao)的(de)拉力和硬度(du),彈性(xing)(xing)較好(hao),多(duo)用(yong)于彈片(pian)(pian)彈簧以及防EMI。琴(qin)式監控臺常州市(shi)博奧電器設備專(zhuan)業供(gong)應!連云(yun)港(gang)現代化(hua)控制(zhi)臺按需求定制(zhi)
控制臺常州(zhou)市博奧(ao)電(dian)器(qi)設(she)備專業供應!南京五聯控制臺生(sheng)產(chan)廠家
鈑(ban)(ban)金(jin),一種加工(gong)(gong)工(gong)(gong)藝(yi),鈑(ban)(ban)金(jin)至今(jin)為(wei)(wei)止尚未有(you)一個(ge)比較完整的(de)定(ding)(ding)義(yi)。根據國外(wai)某專(zhuan)業期(qi)刊上(shang)的(de)一則(ze)定(ding)(ding)義(yi),可以(yi)將(jiang)其(qi)定(ding)(ding)義(yi)為(wei)(wei):鈑(ban)(ban)金(jin)是(shi)(shi)針對金(jin)屬薄(bo)板(通常(chang)在6mm以(yi)下(xia))一種綜(zong)合冷加工(gong)(gong)工(gong)(gong)藝(yi),包括(kuo)剪、沖/切/復合、折(zhe)、鉚接、拼接、成(cheng)型(如汽車(che)車(che)身)等(deng)(deng)。其(qi)特征就是(shi)(shi)同一零(ling)件(jian)厚度(du)一致。鈑(ban)(ban)金(jin)具有(you)重(zhong)量輕、強度(du)高、導(dao)電(dian)(能(neng)夠用(yong)于電(dian)磁(ci)屏蔽)、成(cheng)本(ben)低、大規模(mo)量產性能(neng)好等(deng)(deng)特點,在電(dian)子電(dian)器、通信、汽車(che)工(gong)(gong)業、醫療器械等(deng)(deng)領域(yu)得(de)到了(le)廣泛(fan)應用(yong),例如在電(dian)腦機箱、手機、MP3中,鈑(ban)(ban)金(jin)是(shi)(shi)必不可少(shao)的(de)組成(cheng)部分。鈑(ban)(ban)金(jin)件(jian)的(de)設(she)(she)計(ji)變成(cheng)了(le)產品開發過程中很重(zhong)要的(de)一環,機械工(gong)(gong)程師必須熟練掌握鈑(ban)(ban)金(jin)件(jian)的(de)設(she)(she)計(ji)技巧,使得(de)設(she)(she)計(ji)的(de)鈑(ban)(ban)金(jin)既滿(man)足(zu)產品的(de)功能(neng)和外(wai)觀等(deng)(deng)要求(qiu),又能(neng)使得(de)沖壓模(mo)具制造簡單、成(cheng)本(ben)低。南京五聯控制臺生產廠家
本文來自宜(yi)興(xing)市恒通風機有限公(gong)司://vijoo.com.cn/Article/48e199950.html
佛山本地滅白蟻技巧
大家白蟻(yi)(yi)(yi)1生(sheng)(sheng)(sheng)物學(xue)(xue)及生(sheng)(sheng)(sheng)態(tai)學(xue)(xue)特性在(zai)一(yi)個群體內其成蟲由(you)于所處的(de)地位不(bu)同(tong)、分工(gong)不(bu)同(tong)有不(bu)同(tong)的(de)品級分化(hua):生(sheng)(sheng)(sheng)殖(zhi)型(xing)(xing)包括(kuo)原始蟻(yi)(yi)(yi)王和(he)(he)蟻(yi)(yi)(yi)后(hou)),短(duan)翅(chi)補充蟻(yi)(yi)(yi)王和(he)(he)蟻(yi)(yi)(yi)后(hou),無翅(chi)補充蟻(yi)(yi)(yi)王和(he)(he)蟻(yi)(yi)(yi)后(hou);非生(sheng)(sheng)(sheng)殖(zhi)型(xing)(xing)包括(kuo)工(gong)蟻(yi)(yi)(yi)和(he)(he)兵蟻(yi)(yi)(yi))。在(zai)白蟻(yi)(yi)(yi)的(de)群體內 。
從安全穩定的(de)角度出發(fa)選擇(ze)燒(shao)錄廠家:品(pin)(pin)牌信譽:選擇(ze)有名(ming)品(pin)(pin)牌的(de)燒(shao)錄機,可以確保產品(pin)(pin)質量和售后服務的(de)可靠性(xing)。一些(xie)有名(ming)品(pin)(pin)牌如艾默生、西門(men)子、施(shi)耐德(de)等在工(gong)(gong)業自(zi)動化(hua)(hua)領域有很高的(de)聲(sheng)譽。技術(shu)支持:燒(shao)錄機作為工(gong)(gong)業自(zi)動化(hua)(hua) 。
運轉(zhuan)中(zhong)(zhong)檢(jian)查(cha)(cha)與(yu)故障處(chu)理(li)運轉(zhuan)中(zhong)(zhong)的(de)檢(jian)查(cha)(cha)項目有軸承(cheng)的(de)滾動(dong)(dong)聲(sheng)、振(zhen)(zhen)動(dong)(dong)、溫(wen)度、潤滑的(de)狀態等,其(qi)中(zhong)(zhong)軸承(cheng)的(de)滾動(dong)(dong)聲(sheng)、軸承(cheng)的(de)振(zhen)(zhen)動(dong)(dong)如前所述,此處(chu)著中(zhong)(zhong)介紹潤滑如下:軸承(cheng)潤滑的(de)作(zuo)用潤滑對滾動(dong)(dong)軸承(cheng)的(de)疲勞壽命和(he)摩擦、磨損、溫(wen)升、振(zhen)(zhen)動(dong)(dong) 。
防(fang)(fang)水平臺秤是一(yi)種具有防(fang)(fang)水功能的稱重(zhong)設(she)(she)備。比(bi)較廣應用于各(ge)種場(chang)合,如(ru)商店、超市、食品加工廠等(deng)。防(fang)(fang)水平臺秤采用特殊材料和(he)設(she)(she)計(ji)使其防(fang)(fang)水。無論潮濕還(huan)是濺水,該稱重(zhong)設(she)(she)備都表(biao)現良好并保持準確(que)性。這對于需要稱重(zhong)操作的 。
精(jing)釀(niang)(niang)(niang)啤酒是一種以(yi)傳統(tong)啤酒釀(niang)(niang)(niang)造方法為基(ji)礎,通(tong)(tong)過精(jing)細的工藝和品質(zhi)的原材料釀(niang)(niang)(niang)造而成(cheng)的啤酒;它與大眾化啤酒相(xiang)比,更加注重口感、香氣和口感的平衡,同時也更加注重釀(niang)(niang)(niang)造過程(cheng)中的創新和個性化;精(jing)釀(niang)(niang)(niang)啤酒的釀(niang)(niang)(niang)造過程(cheng)通(tong)(tong)常分 。
電磁式(shi)頂針廣(guang)泛(fan)應用于數(shu)控機床、加(jia)工(gong)中心、自動化(hua)生產線(xian)等(deng)領(ling)域,主(zhu)要用于夾緊(jin)(jin)工(gong)件(jian),保證工(gong)件(jian)的(de)穩(wen)定性和精度(du)。電磁式(shi)頂針具(ju)有夾緊(jin)(jin)力大、夾緊(jin)(jin)精度(du)高(gao)、響(xiang)應速(su)度(du)快、使用壽命長等(deng)優點,可以滿(man)足高(gao)精度(du)加(jia)工(gong)的(de)需求。同時, 。
選擇適(shi)合自己(ji)的(de)出口代理(li)是非常重要(yao)的(de)。首先(xian),企業應該考慮(lv)代理(li)公司的(de)經驗和(he)(he)實力(li)。代理(li)公司應該具有專業的(de)貿易經驗和(he)(he)在(zai)海外市場(chang)上的(de)豐富資源,以確保企業在(zai)國際市場(chang)上的(de)競(jing)爭(zheng)力(li)。其次,企業應該考慮(lv)代理(li)公司的(de)聲譽(yu)和(he)(he)信(xin) 。
什(shen)么(me)是離(li)婚(hun)的(de)三性?寧波(bo)離(li)婚(hun)律師為大家講解(jie):1、真實(shi)性。所(suo)謂(wei)真實(shi)性就是指(zhi)該(gai)離(li)婚(hun)證據是客觀真實(shi)的(de),不是偽造(zao)或者根本(ben)不存在(zai)的(de)。2、關(guan)聯性。是指(zhi)該(gai)離(li)婚(hun)證據與本(ben)案待證事實(shi)之(zhi)間(jian)具有邏輯關(guan)聯。3、合法性。是指(zhi)提供(gong)證 。
避免了(le)工(gong)件掉落的(de)現象(xiang),同(tong)理(li)使(shi)用者(zhe)反轉旋鈕(niu)13,則(ze)首先(xian)彈(dan)簧15推動(dong)滑板向外側移動(dong),便可完成調節壓力板7和防(fang)滑墊8與(yu)攻絲(si)頭2的(de)夾(jia)緊力度。需要說明的(de)是,在本文中,諸如首先(xian)和第(di)二等之類的(de)關系術語只只用來將(jiang)一個 。
對(dui)于較(jiao)大和(he)(he)復雜(za)的耐高溫(wen)金屬套(tao)管,為減少變形和(he)(he)開(kai)裂,在淬(cui)火時(shi)可進行預冷處理,但應控制(zhi)時(shi)間,一般根據耐高溫(wen)金屬套(tao)管的形狀等控制(zhi)在幾秒到幾十(shi)秒,前提是不能析出二次(ci)碳化(hua)物而降(jiang)低刀具(ju)的硬度和(he)(he)紅硬性等,另(ling)外(wai)不允許 。
說(shuo)到冰火(huo)板,許多人應該聽到的時(shi)候(hou)可能(neng)會(hui)比(bi)較陌生,不過(guo),聽完我的介紹,大家(jia)應該會(hui)想(xiang)起來是什么。冰火(huo)板常見于隧(sui)道(dao)、醫(yi)院、藥廠等場所,比(bi)如說(shuo)隧(sui)道(dao),我們從隧(sui)道(dao)中經過(guo)的時(shi)候(hou),隧(sui)道(dao)兩旁(pang)的墻壁上有(you)一種白色的、帶有(you)警 。