河北車間全消音室
在(zai)設(she)計消(xiao)音室(shi)(shi)時(shi)應注意(yi):關(guan)于消(xiao)音室(shi)(shi)大(da)(da)(da)小和形(xing)(xing)狀(zhuang)(zhuang)的(de)(de)考(kao)(kao)慮(lv)。一(yi)(yi)般消(xiao)音室(shi)(shi)的(de)(de)建筑造型幾乎不(bu)用球狀(zhuang)(zhuang)、柱狀(zhuang)(zhuang)或(huo)圓弧面的(de)(de)形(xing)(xing)狀(zhuang)(zhuang)。因為如果吸(xi)聲(sheng)(sheng)結構的(de)(de)吸(xi)聲(sheng)(sheng)系數完全(quan)大(da)(da)(da)于0.99,則(ze)殼體形(xing)(xing)狀(zhuang)(zhuang)的(de)(de)影響不(bu)大(da)(da)(da);但在(zai)吸(xi)聲(sheng)(sheng)系數甚低于0.99的(de)(de)情況,至少在(zai)吸(xi)聲(sheng)(sheng)結構的(de)(de)截(jie)止頻率以(yi)下,吸(xi)聲(sheng)(sheng)系數急(ji)遽(ju)下降,則(ze)大(da)(da)(da)的(de)(de)凹面會產生聚焦的(de)(de)聲(sheng)(sheng)缺陷(xian),完全(quan)不(bu)可能獲(huo)得(de)近似(si)的(de)(de)自由聲(sheng)(sheng)場(chang)。對(dui)于機(ji)器輻射(she)噪聲(sheng)(sheng)功率的(de)(de)測(ce)試(shi),一(yi)(yi)般測(ce)點都要在(zai)設(she)備(bei)的(de)(de)四周空間(jian)(jian)布置(zhi),所以(yi)多(duo)為設(she)計成方(fang)形(xing)(xing)或(huo)長方(fang)形(xing)(xing)的(de)(de)半消(xiao)音室(shi)(shi).其(qi)長寬和高(gao)度(du)(du)均可估算,即按(an)有關(guan)測(ce)試(shi)標準所要求(qiu)的(de)(de)測(ce)量(liang)距離、測(ce)量(liang)位置(zhi)、允許與(yu)自由聲(sheng)(sheng)場(chang)的(de)(de)偏差,來確定邊長及高(gao)度(du)(du)的(de)(de)尺寸(cun),當(dang)(dang)然會適當(dang)(dang)留有余地,還要考(kao)(kao)慮(lv)今后可能有的(de)(de)設(she)備(bei)大(da)(da)(da)小。消(xiao)聲(sheng)(sheng)室(shi)(shi)指一(yi)(yi)間(jian)(jian)沒有反射(she)的(de)(de)房間(jian)(jian)。河北車間(jian)(jian)全(quan)消(xiao)音室(shi)(shi)
對(dui)(dui)于電聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)件的(de)參數測(ce)量(liang),則如果聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)源(揚(yang)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi))放(fang)在(zai)消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)室(shi)(shi)中(zhong)心(xin).傳聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)沿(yan)軸向(xiang)(xiang)或平面(mian)(mian)對(dui)(dui)角線(xian)方(fang)向(xiang)(xiang)放(fang)置(一般(ban)測(ce)試(shi)(shi)距離1m,對(dui)(dui)于大(da)尺寸的(de)音箱及(ji)線(xian)陣列等揚(yang)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)系統,需要較大(da)的(de)測(ce)試(shi)(shi)距離),則消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)室(shi)(shi)尺寸就較大(da)。一般(ban)考慮(lv)是將(jiang)(jiang)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)源與傳聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)測(ce)試(shi)(shi)線(xian)的(de)中(zhong)心(xin)設在(zai)消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)室(shi)(shi)的(de)中(zhong)心(xin),并且測(ce)試(shi)(shi)線(xian)沿(yan)平面(mian)(mian)對(dui)(dui)角線(xian)方(fang)向(xiang)(xiang),消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)室(shi)(shi)的(de)形狀是長(chang)方(fang)形.這樣安排使(shi)(shi)消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)室(shi)(shi)空(kong)間較為(wei)節省。建(jian)成后進(jin)行自(zi)由(you)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)場(chang)鑒定時,除聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)源放(fang)在(zai)消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)室(shi)(shi)中(zhong)心(xin)進(jin)行測(ce)量(liang),得到這種(zhong)情況下一定偏差(為(wei)±ldB,±2dB等)內自(zi)由(you)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)場(chang)的(de)范圍,另外將(jiang)(jiang)測(ce)試(shi)(shi)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)源放(fang)在(zai)將(jiang)(jiang)來安放(fang)被(bei)測(ce)揚(yang)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)的(de)位(wei)置.檢(jian)測(ce)在(zai)(平面(mian)(mian)對(dui)(dui)角線(xian)方(fang)向(xiang)(xiang))多遠(yuan)測(ce)試(shi)(shi)距離上(shang)(shang),與理想自(zi)由(you)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)場(chang)的(de)偏差為(wei)多大(da)。上(shang)(shang)海全消(xiao)(xiao)音室(shi)(shi)銷售由(you)于聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)源或接收器(qi)只能置于交點上(shang)(shang),故在(zai)實際使(shi)(shi)用中(zhong)將(jiang)(jiang)受(shou)到很(hen)大(da)限制。
消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)室(shi)是高精度級別的(de)(de)聲(sheng)(sheng)(sheng)(sheng)性能(neng)參數測試(shi)所需的(de)(de),例如按照行業(ye)標準ANSI S12.35和(he)ISO 3745。消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)室(shi)的(de)(de)設(she)計不但(dan)要(yao)求室(shi)內沒有(you)反射聲(sheng)(sheng)(sheng)(sheng),還要(yao)求外界的(de)(de)噪聲(sheng)(sheng)(sheng)(sheng)和(he)振(zhen)(zhen)動不傳到(dao)室(shi)內。隔聲(sheng)(sheng)(sheng)(sheng)性能(neng)與外墻的(de)(de)厚度和(he)質量成正比。更低的(de)(de)振(zhen)(zhen)動從地面傳來,為(wei)此消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)室(shi)整體必(bi)須采用懸浮的(de)(de)防振(zhen)(zhen)結構,即所謂室(shi)中室(shi)結構。吸(xi)(xi)聲(sheng)(sheng)(sheng)(sheng)結構的(de)(de)較好方式是吸(xi)(xi)聲(sheng)(sheng)(sheng)(sheng)尖(jian)(jian)劈(pi)(pi)(pi),下圖為(wei)吸(xi)(xi)聲(sheng)(sheng)(sheng)(sheng)尖(jian)(jian)劈(pi)(pi)(pi)示(shi)意圖。尖(jian)(jian)劈(pi)(pi)(pi)內充填多孔(kong)吸(xi)(xi)聲(sheng)(sheng)(sheng)(sheng)材料(liao)。采用尖(jian)(jian)劈(pi)(pi)(pi)吸(xi)(xi)聲(sheng)(sheng)(sheng)(sheng)體是為(wei)了(le)擴(kuo)大表面積(ji)以提高吸(xi)(xi)聲(sheng)(sheng)(sheng)(sheng)能(neng)力,空氣層是為(wei)了(le)吸(xi)(xi)收低頻。尖(jian)(jian)劈(pi)(pi)(pi)愈長,吸(xi)(xi)收的(de)(de)頻率愈低,長尖(jian)(jian)劈(pi)(pi)(pi)可達(da)2.1m。同時長尖(jian)(jian)劈(pi)(pi)(pi),會使消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)室(shi)容(rong)積(ji)減(jian)小。
截(jie)(jie)止(zhi)(zhi)(zhi)頻率(lv)(lv),截(jie)(jie)止(zhi)(zhi)(zhi)頻率(lv)(lv)是指在此頻率(lv)(lv)以(yi)上(shang),能保證99%的(de)(de)吸聲(sheng)(sheng)系數(shu)。實際工程中的(de)(de)(半(ban))自由場(chang)空間(jian)是指對截(jie)(jie)止(zhi)(zhi)(zhi)頻率(lv)(lv)以(yi)上(shang)的(de)(de)聲(sheng)(sheng)波,半(ban)消聲(sheng)(sheng)室(shi)內為(半(ban))自由場(chang)空間(jian),截(jie)(jie)止(zhi)(zhi)(zhi)頻率(lv)(lv)越低,尖劈(pi)(pi)的(de)(de)長(chang)度(du)要求(qiu)就(jiu)越大。一(yi)般而言,尖劈(pi)(pi)的(de)(de)長(chang)度(du)適用(yong)(yong)于(yu)1/4波長(chang)理論。消聲(sheng)(sheng)室(shi)性能指標:1、截(jie)(jie)止(zhi)(zhi)(zhi)頻率(lv)(lv):100Hz;2、吸聲(sheng)(sheng)系數(shu):截(jie)(jie)止(zhi)(zhi)(zhi)頻率(lv)(lv)以(yi)上(shang)不小(xiao)(xiao)于(yu) 0.99,半(ban)消聲(sheng)(sheng)室(shi);3、本(ben)底:LPA≤15Db(A)(環境無(wu)強振動源,外(wai)環境不超60dB(A)無(wu)打(da)樁(zhuang),沖擊(ji)聲(sheng)(sheng));4、吸聲(sheng)(sheng)尖劈(pi)(pi):400×400×700mm長(chang)×寬(kuan)×高(gao)(附圖紙),內填充超細(xi)玻璃(li)棉;5、吸聲(sheng)(sheng)系數(shu):截(jie)(jie)止(zhi)(zhi)(zhi)頻率(lv)(lv)以(yi)上(shang)不小(xiao)(xiao)于(yu)0.99;6、內凈空尺寸(cun):5M*寬(kuan) 5M*高(gao) 3.8M 長(chang)×寬(kuan)×高(gao);7、室(shi)內反射(she)地坪:水(shui)晶磚或(huo)不銹鋼板(ban);8、制(zhi)造商。消聲(sheng)(sheng)室(shi)一(yi)般使用(yong)(yong)漸變吸收層,常用(yong)(yong)尖劈(pi)(pi)或(huo)圓錐結構,以(yi)玻璃(li)棉作吸聲(sheng)(sheng)材料,也有用(yong)(yong)軟泡沫(mo)塑料的(de)(de)。
在過去(qu)跟大家科普(pu)過很多的(de)(de)聲(sheng)(sheng)(sheng)(sheng)學實(shi)驗(yan)室(shi)(shi)(shi),包括全消聲(sheng)(sheng)(sheng)(sheng)室(shi)(shi)(shi)、半消聲(sheng)(sheng)(sheng)(sheng)室(shi)(shi)(shi)、消聲(sheng)(sheng)(sheng)(sheng)室(shi)(shi)(shi)、消音(yin)(yin)(yin)(yin)室(shi)(shi)(shi)、無響(xiang)室(shi)(shi)(shi),靜音(yin)(yin)(yin)(yin)室(shi)(shi)(shi),混響(xiang)室(shi)(shi)(shi)、隔音(yin)(yin)(yin)(yin)室(shi)(shi)(shi)等等。消音(yin)(yin)(yin)(yin)室(shi)(shi)(shi)在實(shi)際(ji)應用中很普(pu)遍,也(ye)叫作沒有反射的(de)(de)房間(jian)。消音(yin)(yin)(yin)(yin)室(shi)(shi)(shi)是對聲(sheng)(sheng)(sheng)(sheng)學研究的(de)(de)一(yi)個重要工具,消音(yin)(yin)(yin)(yin)室(shi)(shi)(shi)的(de)(de)聲(sheng)(sheng)(sheng)(sheng)學性能(neng)指標,可(ke)以(yi)直接(jie)影(ying)(ying)響(xiang)到(dao)測試的(de)(de)精度(du)。消音(yin)(yin)(yin)(yin)室(shi)(shi)(shi)是什(shen)么?消音(yin)(yin)(yin)(yin)室(shi)(shi)(shi)有哪些特點?這里帶大家認識(shi)一(yi)下消音(yin)(yin)(yin)(yin)室(shi)(shi)(shi)。消音(yin)(yin)(yin)(yin)室(shi)(shi)(shi)是什(shen)么,告訴你,實(shi)際(ji)上消音(yin)(yin)(yin)(yin)室(shi)(shi)(shi)就(jiu)是消聲(sheng)(sheng)(sheng)(sheng)室(shi)(shi)(shi),只是人們(men)的(de)(de)叫法不同。消音(yin)(yin)(yin)(yin)室(shi)(shi)(shi)是一(yi)種(zhong)(zhong)沒有任何(he)聲(sheng)(sheng)(sheng)(sheng)音(yin)(yin)(yin)(yin)的(de)(de)房間(jian),也(ye)就(jiu)是說(shuo),把內部(bu)的(de)(de)聲(sheng)(sheng)(sheng)(sheng)音(yin)(yin)(yin)(yin)和外(wai)部(bu)的(de)(de)雜音(yin)(yin)(yin)(yin),都降低到(dao)較小,也(ye)是一(yi)種(zhong)(zhong)聲(sheng)(sheng)(sheng)(sheng)學實(shi)驗(yan)室(shi)(shi)(shi)。消聲(sheng)(sheng)(sheng)(sheng)室(shi)(shi)(shi)聲(sheng)(sheng)(sheng)(sheng)學性能(neng)指標直接(jie)影(ying)(ying)響(xiang)測試的(de)(de)精度(du)。河北車間(jian)全消音(yin)(yin)(yin)(yin)室(shi)(shi)(shi)
在(zai)寬(kuan)帶噪聲信號測試時,尤其半消(xiao)聲室中噪聲源聲功率級的(de)測定,很多情(qing)況下就不一定采用尖劈吸聲結構的(de)設計(ji)。河北車(che)間全消(xiao)音室
消(xiao)(xiao)音室聲(sheng)(sheng)隔(ge)離性(xing)能:頻(pin)率(Hz):125:250:500:1000:2000:4000:8000,傳輸損失(dB):28:31:39:48:54:58:63,截止(zhi)頻(pin)率125Hz,半消(xiao)(xiao)聲(sheng)(sheng)室的(de)隔(ge)聲(sheng)(sheng)特(te)性(xing)是根據設計要求和周圍環境決(jue)定。復合(he)隔(ge)聲(sheng)(sheng)結構(gou),能滿足(zu)以下隔(ge)聲(sheng)(sheng)特(te)性(xing):人(ren)耳能辨別出回聲(sheng)(sheng)的(de)條件是反(fan)射聲(sheng)(sheng)具有足(zu)夠(gou)大(da)的(de)聲(sheng)(sheng)強,并且與原(yuan)聲(sheng)(sheng)的(de)時差須大(da)于0.1秒。當反(fan)射面的(de)尺寸遠(yuan)大(da)于入(ru)射聲(sheng)(sheng)波(bo)長(chang)時,聽到(dao)的(de)回聲(sheng)(sheng)較清楚(chu)。即相隔(ge)17米時。20Hz~20000Hz,人(ren)類對聲(sheng)(sheng)音的(de)感應范圍。此外,是超(chao)聲(sheng)(sheng)波(bo)和次聲(sheng)(sheng)波(bo)。 0.38~0.72μm,人(ren)類對光(guang)的(de)感知范圍。河北車間全(quan)消(xiao)(xiao)音室
常州欣(xin)澳(ao)環(huan)保(bao)設(she)(she)備(bei)有(you)限公(gong)司(si)是(shi)(shi)以(yi)提供隔音(yin)(yin)(yin)房(fang),精(jing)密沖床隔音(yin)(yin)(yin)箱(xiang),流(liu)水線(xian)、電(dian)子檢測,靜音(yin)(yin)(yin)房(fang),消聲(sheng)室內的(de)多(duo)項(xiang)(xiang)綜(zong)合服(fu)務,為消費者多(duo)方位提供隔音(yin)(yin)(yin)房(fang),精(jing)密沖床隔音(yin)(yin)(yin)箱(xiang),流(liu)水線(xian)、電(dian)子檢測,靜音(yin)(yin)(yin)房(fang),消聲(sheng)室,欣(xin)澳(ao)環(huan)保(bao)是(shi)(shi)我國(guo)機械(xie)及行業設(she)(she)備(bei)技(ji)術的(de)研究和(he)標準(zhun)制定的(de)重要(yao)參與(yu)者和(he)貢獻者。公(gong)司(si)承擔并建(jian)設(she)(she)完成機械(xie)及行業設(she)(she)備(bei)多(duo)項(xiang)(xiang)重點(dian)項(xiang)(xiang)目,取得了明(ming)顯(xian)的(de)社會和(he)經濟效益。欣(xin)澳(ao)環(huan)保(bao)將以(yi)精(jing)良的(de)技(ji)術、優異的(de)產品性能(neng)和(he)完善(shan)的(de)售后服(fu)務,滿足國(guo)內外廣(guang)大客(ke)戶的(de)需求。
本文(wen)來自宜興市恒通風機有限公司://vijoo.com.cn/Article/20d5799922.html
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EdU細(xi)(xi)胞増(zeng)殖(zhi)檢測試劑盒(he)(紅(hong)色熒光)使用(yong)說明產品簡介(jie)細(xi)(xi)胞增殖(zhi)是評價細(xi)(xi)胞活性、代謝、生理(li)和病理(li)狀況(kuang)的重要(yao)指標。EdU(5-Ethynyl-2,-deoxyuridine)是一種胸腺嘧啶核苷(gan)類似物,其(qi)連有 。
春城(cheng)快速撈(lao)泵(beng)(beng),服務于長春、吉(ji)林黑龍江等大中小城(cheng)市,能速撈(lao)泵(beng)(beng)、提泵(beng)(beng)、下泵(beng)(beng)、深井探(tan)測。洗井,空氣(qi)壓(ya)縮(suo)機洗井10-200米能清洗出(chu)水中的淤泥與沉淀,和老井修(xiu)復(fu)。能清洗水窖,保證水質清潔。打撈(lao)作業(ye)對(dui)環保安(an)全工 。
中央(yang)空(kong)調(diao)冷卻(que)塔內部就會出現污(wu)垢,若不(bu)進(jin)行(xing)清理的話(hua),在(zai)使用空(kong)調(diao)期間,吹(chui)出來的風(feng)變會攜帶(dai)細(xi)菌,從而影響我(wo)們的身體健康,所以就需要定期對冷卻(que)塔內部進(jin)行(xing)清理,基礎安裝面剖平并(bing)保證在(zai)同一水面上,下立(li)柱及下進(jin)水管 。
實(shi)木地(di)板的(de)(de)突出特點(dian)是(shi)冬(dong)暖(nuan)夏涼,因(yin)為它有(you)著天然(ran)木材(cai)自然(ran)生長的(de)(de)優勢,紋理(li)分明(ming),不(bu)易導熱(re),因(yin)此(ci)它還有(you)著調(diao)節濕度和(he)隔(ge)音隔(ge)熱(re)的(de)(de)特點(dian)。實(shi)木復(fu)合(he)地(di)板的(de)(de)環保性(xing)(xing)很好,其穩定性(xing)(xing)與美(mei)觀性(xing)(xing)綜合(he)了強化地(di)板與實(shi)木地(di)板二者的(de)(de)優點(dian)。 。
網球(qiu)場(chang)(chang)基(ji)(ji)礎地面(mian)建(jian)設在規劃設計(ji)方案出來以后(hou),就要(yao)開始基(ji)(ji)礎施工。一片網球(qiu)場(chang)(chang)的質量(liang)高低(di),很大程度上都取決于它的基(ji)(ji)礎建(jian)設的好壞(huai)。因此(ci),基(ji)(ji)礎施工一定(ding)要(yao)選擇基(ji)(ji)礎建(jian)筑的專業施工隊伍(wu),根據場(chang)(chang)地基(ji)(ji)礎的要(yao)求(qiu),嚴(yan)格(ge)按照(zhao)施工 。
所以其孔(kong)壁會有(you)自然的傾角,使得(de)整個孔(kong)的剖面呈倒梯(ti)形結構,這個錐度(du)大概也就相當(dang)于鋼片(pian)厚(hou)度(du)一(yi)半。手工(gong)浸(jin)泡擦洗就是把(ba)SMT鋼網浸(jin)泡入清(qing)洗劑(ji)中,采用人工(gong)擦洗的方式進行清(qing)洗。此(ci)種清(qing)洗方式一(yi)次(ci)投入少,不用購買設備 。
靜電噴涂(tu)靜電噴涂(tu)是(shi)對涂(tu)料(liao)霧化(hua)裝置施加負高電壓,被(bei)涂(tu)工(gong)件接(jie)地(di)為正(zheng)電極,在(zai)涂(tu)料(liao)霧化(hua)裝置與(yu)被(bei)涂(tu)工(gong)件之間形成一個高壓放(fang)電電場,使霧化(hua)的涂(tu)料(liao)在(zai)靜電吸引下(xia),被(bei)有效地(di)吸附在(zai)帶正(zheng)電荷的被(bei)涂(tu)工(gong)件上。靜電噴涂(tu)比較(jiao)大(da)的優(you)點(dian) 。
回(hui)收(shou)和典當是不一樣的,在典當行(xing)中(zhong)有典當和回(hui)收(shou)兩種變現模式(shi),典當就(jiu)是活當,到期之后贖回(hui)去,絕當相當于回(hui)收(shou),直接(jie)將物品售(shou)賣(mai)給(gei)典當行(xing)。首先就(jiu)價(jia)格(ge)來說,哪個(ge)更(geng)高(gao)呢(ni)?這么看的話肯(ken)定是回(hui)收(shou)價(jia)格(ge)價(jia)格(ge)更(geng)高(gao)了(le),因為典當 。
作為蔬菜大(da)棚之(zhi)一(yi),對(dui)原有的(de)根底(di)玻璃(li)(li)大(da)棚進行了晉級改造,以添加農作物產值。它選用玻璃(li)(li)作為采光資料,能習(xi)慣(guan)不同區域和氣候條(tiao)件。其作業原理是(shi)以自動控制的(de)方式調(diao)理玻璃(li)(li)溫室內的(de)各(ge)種溫濕度,為作物成長發明愈加有利 。
每(mei)周保養(yang)內容液路視(shi)鏡檢(jian)(jian)查制冷(leng)劑充注量。檢(jian)(jian)查壓(ya)縮(suo)機油(you)位(wei)。檢(jian)(jian)查壓(ya)縮(suo)機曲軸箱加熱器運行。檢(jian)(jian)查主電(dian)源及(ji)控(kong)制電(dian)壓(ya)。檢(jian)(jian)查機組周圍區域表(biao)象。檢(jian)(jian)查系統壓(ya)力。每(mei)月保養(yang)內容制冷(leng)系統有無泄漏。檢(jian)(jian)查吸氣過濾(lv)器和液路干(gan)燥過濾(lv)器 。