一、軟件特殊性

測(ce)(ce)(ce)試(shi)(shi)(shi)(shi)報告臺兼具較問(wen)題解決的(de)(de)穩定守護(hu)安會(hui)措(cuo)施，較非(fei)常的(de)(de)功(gong)能模(mo)塊電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)。在(zai)前一代的(de)(de)好產品基礎框架上多(duo)個(ge)(ge)面(mian)(mian)做出(chu)了(le)比相對較大的(de)(de)問(wen)題解決。測(ce)(ce)(ce)試(shi)(shi)(shi)(shi)報告新(xin)項(xiang)目更(geng)多(duo)多(duo)樣化、蓋住面(mian)(mian)廣、測(ce)(ce)(ce)試(shi)(shi)(shi)(shi)報告網(wang)站(zhan)網(wang)站(zhan)內(nei)容(rong)首選空間大，測(ce)(ce)(ce)試(shi)(shi)(shi)(shi)報告極(ji)高有(you)比相對較大增進，使測(ce)(ce)(ce)試(shi)(shi)(shi)(shi)報告更(geng)多(duo)深入淺(qian)出(chu)詳細完(wan)整。測(ce)(ce)(ce)試(shi)(shi)(shi)(shi)報告臺加(jia)裝了(le)智力(li)化數字(zi)8直流電(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)表，自動測(ce)(ce)(ce)試(shi)(shi)(shi)(shi)表面(mian)(mian)粗(cu)糙(cao)度(du)就越(yue)高、自動測(ce)(ce)(ce)試(shi)(shi)(shi)(shi)比率寬、運用(yong)(yong)省事。低壓(ya)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)工(gong)強電(dian)(dian)(dian)(dian)(dian)(dian)(dian)局(ju)(ju)部(bu)測(ce)(ce)(ce)試(shi)(shi)(shi)(shi)報告均用(yong)(yong)于(yu)隱(yin)秘式電(dian)(dian)(dian)(dian)(dian)(dian)(dian)學(xue)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)插座就多(duo)留幾(ji)個(ge)(ge)，打(da)交(jiao)道可靠的(de)(de)、穩定；繼電(dian)(dian)(dian)(dian)(dian)(dian)(dian)打(da)交(jiao)道器(qi)、開關、時刻斷電(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)產品等(deng)建成自由箱式，元電(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)構(gou)(gou)(gou)件(jian)觸點(dian)均已(yi)引(yin)接電(dian)(dian)(dian)(dian)(dian)(dian)(dian)學(xue)多(duo)功(gong)能電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)插座就多(duo)留幾(ji)個(ge)(ge)上，測(ce)(ce)(ce)試(shi)(shi)(shi)(shi)報告省事、快(kuai)鍵。弱電(dian)(dian)(dian)(dian)(dian)(dian)(dian)工(gong)程(cheng)局(ju)(ju)部(bu)在(zai)九孔(kong)代用(yong)(yong)測(ce)(ce)(ce)試(shi)(shi)(shi)(shi)報告底板上完(wan)工(gong)，測(ce)(ce)(ce)試(shi)(shi)(shi)(shi)報告機動性、靈(ling)巧、親手動腦性能強。多(duo)元化測(ce)(ce)(ce)試(shi)(shi)(shi)(shi)報告構(gou)(gou)(gou)件(jian)模(mo)塊電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)盒(he)體透明度(du)，最直觀性好，盒(he)蓋印(yin)有(you)不(bu)變色構(gou)(gou)(gou)件(jian)特殊符號，曲線清(qing)洗美觀度(du)。盒(he)體與(yu)盒(he)蓋用(yong)(yong)于(yu)較專(zhuan)業的(de)(de)壓(ya)卡式機構(gou)(gou)(gou)，維(wei)修部(bu)、更(geng)換構(gou)(gou)(gou)件(jian)拆卸省事。平(ping)臺式電(dian)(dian)(dian)(dian)(dian)(dian)(dian)腦制(zhi)(zhi)定，測(ce)(ce)(ce)試(shi)(shi)(shi)(shi)報告構(gou)(gou)(gou)件(jian)分(fen)旋轉式，專(zhuan)科(ke)大學(xue)除能完(wan)工(gong)建議(yi)本上測(ce)(ce)(ce)試(shi)(shi)(shi)(shi)報告，還能再生利用(yong)(yong)元電(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)構(gou)(gou)(gou)件(jian)制(zhi)(zhi)定達到在(zai)工(gong)作(zuo)中中小學(xue)校規范(fan)要求的(de)(de)測(ce)(ce)(ce)試(shi)(shi)(shi)(shi)報告網(wang)站(zhan)網(wang)站(zhan)內(nei)容(rong)。測(ce)(ce)(ce)試(shi)(shi)(shi)(shi)報告臺極(ji)高為1.15M，測(ce)(ce)(ce)試(shi)(shi)(shi)(shi)報告室(shi)頁面(mian)(mian)布局(ju)(ju)不(bu)易產品極(ji)高局(ju)(ju)限。

二、適用性規模

支持高等專科(ke)中小學校專科(ke)院(yuan)校及規范要(yao)求較高的(de)職高、技工(gong)中小學校、職業講解中小學校、科(ke)學研究(jiu)機構，可(ke)順利完成安裝技工(gong)學、安裝技工(gong)方法、電路系統講解、繼電氣控制制等在線課(ke)程進(jin)(jin)行(xing)(xing)進(jin)(jin)行(xing)(xing)實驗設計(ji)、培(pei)訓。該設施的(de)設備(bei)是現存進(jin)(jin)行(xing)(xing)進(jin)(jin)行(xing)(xing)實驗設計(ji)室設施的(de)設備(bei)的(de)提升換代或新創建(jian)、擴建(jian)工(gong)程進(jin)(jin)行(xing)(xing)進(jin)(jin)行(xing)(xing)實驗設計(ji)室的(de)佳的(de)產(chan)品(pin)。

三(san)、檢測臺搭建與特點

1、供電及參數設置

1.1插(cha)入電原：相電壓四線(xian)電原，插(cha)入時(shi)警(jing)示燈亮。

1.2電原(yuan)輸(shu)出電壓：有融入式保障盒和三(san)相電源漏(lou)電觸點開關三(san)級愛護作用。

A組(zu)：單、380V電(dian)(dian)(dian)(dian)(dian)(dian)(dian)可(ke)控討論(lun)(lun)(lun)(lun)(lun)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)討論(lun)(lun)(lun)(lun)(lun)直(zhi)(zhi)流(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)光(guang)(guang)(guang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)探(tan)(tan)測(ce)(ce)(ce)器(qi)(qi)(qi)(qi)(qi)壓(ya)(ya)(ya)(ya)(ya)(ya)功(gong)(gong)(gong)(gong)率(lv)(lv)適(shi)(shi)配(pei)器(qi)(qi)(qi)(qi)(qi)，能提(ti)供0－380V維持可(ke)控的討論(lun)(lun)(lun)(lun)(lun)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)討論(lun)(lun)(lun)(lun)(lun)直(zhi)(zhi)流(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)光(guang)(guang)(guang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)探(tan)(tan)測(ce)(ce)(ce)器(qi)(qi)(qi)(qi)(qi)壓(ya)(ya)(ya)(ya)(ya)(ya)功(gong)(gong)(gong)(gong)率(lv)(lv)適(shi)(shi)配(pei)器(qi)(qi)(qi)(qi)(qi)，與(yu)此同時可(ke)求到0—240V220V可(ke)控討論(lun)(lun)(lun)(lun)(lun)直(zhi)(zhi)流(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)光(guang)(guang)(guang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)探(tan)(tan)測(ce)(ce)(ce)器(qi)(qi)(qi)(qi)(qi)壓(ya)(ya)(ya)(ya)(ya)(ya)功(gong)(gong)(gong)(gong)率(lv)(lv)適(shi)(shi)配(pei)器(qi)(qi)(qi)(qi)(qi)（備有(you)一種1.5KVA的380V電(dian)(dian)(dian)(dian)(dian)(dian)(dian)自耦調壓(ya)(ya)(ya)(ya)(ya)(ya)器(qi)(qi)(qi)(qi)(qi)，備有(you)三只(zhi)夜晶討論(lun)(lun)(lun)(lun)(lun)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)直(zhi)(zhi)流(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)光(guang)(guang)(guang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)探(tan)(tan)測(ce)(ce)(ce)器(qi)(qi)(qi)(qi)(qi)壓(ya)(ya)(ya)(ya)(ya)(ya)功(gong)(gong)(gong)(gong)率(lv)(lv)表(biao)(biao)，顯(xian)示燈(deng)調壓(ya)(ya)(ya)(ya)(ya)(ya)導(dao)(dao)(dao)出(chu)直(zhi)(zhi)流(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)光(guang)(guang)(guang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)探(tan)(tan)測(ce)(ce)(ce)器(qi)(qi)(qi)(qi)(qi)壓(ya)(ya)(ya)(ya)(ya)(ya)功(gong)(gong)(gong)(gong)率(lv)(lv)）。 B組(zu)：高(gao)壓(ya)(ya)(ya)(ya)(ya)(ya)血壓(ya)(ya)(ya)(ya)(ya)(ya)低(di)壓(ya)(ya)(ya)(ya)(ya)(ya)高(gao)討論(lun)(lun)(lun)(lun)(lun)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)3、6、9、12、15、18、24V討論(lun)(lun)(lun)(lun)(lun)直(zhi)(zhi)流(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)光(guang)(guang)(guang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)探(tan)(tan)測(ce)(ce)(ce)器(qi)(qi)(qi)(qi)(qi)壓(ya)(ya)(ya)(ya)(ya)(ya)功(gong)(gong)(gong)(gong)率(lv)(lv)適(shi)(shi)配(pei)器(qi)(qi)(qi)(qi)(qi)，最(zui)多導(dao)(dao)(dao)出(chu)功(gong)(gong)(gong)(gong)率(lv)(lv)1.5A。 C組(zu)：高(gao)壓(ya)(ya)(ya)(ya)(ya)(ya)血壓(ya)(ya)(ya)(ya)(ya)(ya)低(di)壓(ya)(ya)(ya)(ya)(ya)(ya)高(gao)直(zhi)(zhi)流(liu)(liu)(liu)(liu)(liu)輸入(ru)功(gong)(gong)(gong)(gong)率(lv)(lv)穩壓(ya)(ya)(ya)(ya)(ya)(ya)討論(lun)(lun)(lun)(lun)(lun)直(zhi)(zhi)流(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)光(guang)(guang)(guang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)探(tan)(tan)測(ce)(ce)(ce)器(qi)(qi)(qi)(qi)(qi)壓(ya)(ya)(ya)(ya)(ya)(ya)功(gong)(gong)(gong)(gong)率(lv)(lv)適(shi)(shi)配(pei)器(qi)(qi)(qi)(qi)(qi)，直(zhi)(zhi)流(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)光(guang)(guang)(guang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)探(tan)(tan)測(ce)(ce)(ce)器(qi)(qi)(qi)(qi)(qi)壓(ya)(ya)(ya)(ya)(ya)(ya)功(gong)(gong)(gong)(gong)率(lv)(lv)5V，功(gong)(gong)(gong)(gong)率(lv)(lv)0.5A。 D組(zu)：雙路(lu)恒流(liu)(liu)(liu)(liu)(liu)穩壓(ya)(ya)(ya)(ya)(ya)(ya)討論(lun)(lun)(lun)(lun)(lun)直(zhi)(zhi)流(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)光(guang)(guang)(guang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)探(tan)(tan)測(ce)(ce)(ce)器(qi)(qi)(qi)(qi)(qi)壓(ya)(ya)(ya)(ya)(ya)(ya)功(gong)(gong)(gong)(gong)率(lv)(lv)適(shi)(shi)配(pei)器(qi)(qi)(qi)(qi)(qi)，二路(lu)導(dao)(dao)(dao)出(chu)直(zhi)(zhi)流(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)光(guang)(guang)(guang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)探(tan)(tan)測(ce)(ce)(ce)器(qi)(qi)(qi)(qi)(qi)壓(ya)(ya)(ya)(ya)(ya)(ya)功(gong)(gong)(gong)(gong)率(lv)(lv)均(jun)為0—30V，原帶式繼物品自然換(huan)檔。多圈電(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)可(ke)調電(dian)(dian)(dian)(dian)(dian)(dian)(dian)位器(qi)(qi)(qi)(qi)(qi)維持自動(dong)調節，用(yong)到便。導(dao)(dao)(dao)出(chu)最(zui)多功(gong)(gong)(gong)(gong)率(lv)(lv)為1.5A，兼備鏡頭光(guang)(guang)(guang)暈式限流(liu)(liu)(liu)(liu)(liu)保護措施(shi)功(gong)(gong)(gong)(gong)能模塊(kuai)，每組(zu)導(dao)(dao)(dao)出(chu)有(you)0.5級數(shu)字9功(gong)(gong)(gong)(gong)率(lv)(lv)表(biao)(biao)、直(zhi)(zhi)流(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)光(guang)(guang)(guang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)探(tan)(tan)測(ce)(ce)(ce)器(qi)(qi)(qi)(qi)(qi)壓(ya)(ya)(ya)(ya)(ya)(ya)功(gong)(gong)(gong)(gong)率(lv)(lv)表(biao)(biao)顯(xian)示燈(deng)，直(zhi)(zhi)流(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)光(guang)(guang)(guang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)探(tan)(tan)測(ce)(ce)(ce)器(qi)(qi)(qi)(qi)(qi)壓(ya)(ya)(ya)(ya)(ya)(ya)功(gong)(gong)(gong)(gong)率(lv)(lv)不穩度＜10-2，過載不穩度＜10-2，紋波(bo)直(zhi)(zhi)流(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)光(guang)(guang)(guang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)探(tan)(tan)測(ce)(ce)(ce)器(qi)(qi)(qi)(qi)(qi)壓(ya)(ya)(ya)(ya)(ya)(ya)功(gong)(gong)(gong)(gong)率(lv)(lv)＜5mv。 E組(zu)：220V討論(lun)(lun)(lun)(lun)(lun)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)市電(dian)(dian)(dian)(dian)(dian)(dian)(dian)導(dao)(dao)(dao)出(chu)，由那么萬能的插板供觀眾專用(yong)設配(pei)用(yong)到。

2、電功率輸送函數值突發(fa)器：

1）通(tong)過(guo)就(jiu)直接(jie)性小數(shu)頻(pin)繁分(fen)解成（DDS）造成高表面粗糙度(du)正(zheng)(zheng)弦交(jiao)(jiao)流(liu)(liu)(liu)(liu)電(dian)交(jiao)(jiao)流(liu)(liu)(liu)(liu)電(dian)交(jiao)(jiao)流(liu)(liu)(liu)(liu)電(dian)波(bo)(bo)，方波(bo)(bo)和三角(jiao)(jiao)型形(xing)波(bo)(bo)。通(tong)過(guo)大信(xin)息顯(xian)示手機屏(ping)幕LCD信(xin)息顯(xian)示模擬(ni)傳(chuan)輸頻(pin)繁、正(zheng)(zheng)弦交(jiao)(jiao)流(liu)(liu)(liu)(liu)電(dian)交(jiao)(jiao)流(liu)(liu)(liu)(liu)電(dian)波(bo)(bo)形(xing)，衰(shuai)減(jian)值。 2）正(zheng)(zheng)弦交(jiao)(jiao)流(liu)(liu)(liu)(liu)電(dian)交(jiao)(jiao)流(liu)(liu)(liu)(liu)電(dian)交(jiao)(jiao)流(liu)(liu)(liu)(liu)電(dian)波(bo)(bo)模擬(ni)傳(chuan)輸頻(pin)帶寬度(du)≥10V,模擬(ni)傳(chuan)輸電(dian)位差(cha)差(cha)50Ω，偏色(se)度(du)<1%（0.1HZ-- 1KHz）。 3）頻(pin)繁依據(ju)(ju): 0.1HZ~3MHz, 通(tong)過(guo)游(you)戲鍵(jian)盤就(jiu)直接(jie)性輸入(ru)小數(shu)場景人物(wu)風格的設定(ding)在頻(pin)繁,。 4）模擬(ni)傳(chuan)輸頻(pin)帶寬度(du)通(tong)過(guo)電(dian)位差(cha)器(qi)調接(jie)，正(zheng)(zheng)弦交(jiao)(jiao)流(liu)(liu)(liu)(liu)電(dian)交(jiao)(jiao)流(liu)(liu)(liu)(liu)電(dian)交(jiao)(jiao)流(liu)(liu)(liu)(liu)電(dian)波(bo)(bo)模擬(ni)傳(chuan)輸兼備20db,40db衰(shuai)減(jian)。 5）方波(bo)(bo)占空比(bi)隨意調接(jie), 調接(jie)依據(ju)(ju)：1%-99%調接(jie)；方波(bo)(bo)和三角(jiao)(jiao)型形(xing)波(bo)(bo)通(tong)過(guo)TTL電(dian)平模擬(ni)傳(chuan)輸。 6）頻(pin)繁計最(zui)高的人檢測依據(ju)(ju)100MHz，一(yi)鍵(jian)換檔。

2.5默(mo)認設置式(shi)電(dian)度(du)表(biao)：臺內有一種(zhong)220V電(dian)度(du)表(biao)，接電(dian)源端孔轉到面板價格，有上班可視框(kuang)。

2.6默認設(she)(she)置式陽(yang)光(guang)房燈(deng)引擎(qing)：臺內己裝設(she)(she)一種(zhong)陽(yang)光(guang)房燈(deng)引擎(qing)，實踐(jian)方(fang)便(bian)快捷、安(an)全可(ke)靠。

2.7自動式化型直(zhi)(zhi)流電小(xiao)數直(zhi)(zhi)流電壓(ya)表(biao)：誤差0.5級(ji)，選取ICL單位高耐(nai)磨性AD互(hu)轉器(qi)配上極速MPU單位規劃(hua)而成完(wan)成鍵控、數顯(xian)儀表(biao)窗體做到人機對(dui)戰對(dui)戰功用設(she)定(ding)機制。包括自動式與(yu)人工機械量限(xian)，20mA、200mA、2000mA三檔(dang)，量測範圍：0-2000mA。包括大數據文件存(cun)儲與(yu)查(cha)找、過多限(xian)警報器(qi)、提(ti)示功用。

2.8智能(neng)(neng)型真有(you)(you)(you)效(xiao)值交流電流表：精度0.5級，測量范圍0～5A，采用美國模擬器(qi)件公司(si)生產(chan)的新型高(gao)(gao)性能(neng)(neng)RMS真有(you)(you)(you)效(xiao)值轉換(huan)器(qi)，配以(yi)高(gao)(gao)速MPU單元設計(ji)而(er)成。具(ju)有(you)(you)(you)量程(cheng)自(zi)(zi)動判斷、真有(you)(you)(you)效(xiao)值自(zi)(zi)動切換(huan)、告警、復位功能(neng)(neng)。使用方(fang)便，精度高(gao)(gao)，安(an)全可靠。

2.9智(zhi)慧型電(dian)機(ji)熱效(xiao)(xiao)率表、電(dian)機(ji)熱效(xiao)(xiao)率質(zhi)(zhi)(zhi)質(zhi)(zhi)(zhi)條(tiao)件表：由24位(wei)專(zhuan)門(men)的DSP、16位(wei)高gps計(ji)算精度AD轉移(yi)器和高速路(lu)MPU單(dan)元測(ce)試卷設(she)置(zhi)(zhi)而(er)成(cheng)，依據(ju)鍵(jian)控(kong)(kong)、數顯(xian)式任務欄實現目標(biao)人與(yu)機(ji)器聊天模塊抑制模型。工具上(shang)所采用RTOS設(she)置(zhi)(zhi)指導思想，同時搭配PC管控(kong)(kong)工具來(lai)搞好闡(chan)述(shu)效(xiao)(xiao)果。能量(liang)(liang)測(ce)方法電(dian)源線(xian)路(lu)的電(dian)機(ji)熱效(xiao)(xiao)率、電(dian)機(ji)熱效(xiao)(xiao)率質(zhi)(zhi)(zhi)質(zhi)(zhi)(zhi)條(tiao)件。電(dian)機(ji)熱效(xiao)(xiao)率量(liang)(liang)測(ce)方法gps計(ji)算精度為1.0級，電(dian)機(ji)熱效(xiao)(xiao)率質(zhi)(zhi)(zhi)質(zhi)(zhi)(zhi)條(tiao)件量(liang)(liang)測(ce)方法依據(ju)0.3-1.0，阻(zu)值值直流(liu)(liu)電(dian)量(liang)(liang)限為450V和5A，能定時判別(bie)電(dian)流(liu)(liu)的性質(zhi)(zhi)(zhi)（物質(zhi)(zhi)(zhi)性顯(xian)視“L”，容性顯(xian)視“C”，純阻(zu)值不(bu)顯(xian)視），并可存儲(chu)器量(liang)(liang)測(ce)方法數據(ju)文件，供(gong)時刻(ke)查詢。

四、科(ke)學實驗操(cao)控桌 　　由正反砂巖板板做成，不(bu)改形，不(bu)掉(diao)色。的尺(chi)寸：160×70×80cm，鋁不(bu)銹鋼(gang)結構，造(zao)型設(she)計整齊大氣(qi)，中設(she)置抽(chou)斗，存儲方法，左右兩邊二只永久保存柜，用到永久保存元電(dian)器元件。