小聪多头磁(ci)(ci)力(li)加(jia)(jia)热搅(jiao)拌器使用(yong)说明(ming)：将(jiang)装有(you)溶液和搅(jiao)拌子的(de)试瓶(ping)（或其它器皿）放在工(gong)作(zuo)面(mian)顶板上(shang)(shang)，当需(xu)要使用(yong)夹具(ju)时，应调(diao)整(zheng)，校准夹具(ju)在立柱上(shang)(shang)的(de)高(gao)度位置，并正确装夹。接(jie)通外电(dian)源(yuan)。将(jiang)相(xiang)应的(de)搅(jiao)拌开(kai)(kai)关合上(shang)(shang)，对(dui)应指(zhi)示(shi)灯(deng)亮(liang)，调(diao)节(jie)调(diao)速(su)旋钮(niu)，升至所需(xu)转速(su)。将(jiang)相(xiang)应的(de)加(jia)(jia)热开(kai)(kai)关合上(shang)(shang)，对(dui)应指(zhi)示(shi)灯(deng)亮(liang)，即为(wei)加(jia)(jia)热状态。工(gong)作(zuo)完毕，将(jiang)调(diao)速(su)旋钮(niu)置于低速(su)零(ling)位置，关搅(jiao)拌和加(jia)(jia)热开(kai)(kai)关，切(qie)断电(dian)源(yuan)后将(jiang)工(gong)作(zuo)面(mian)顶板、立柱、夹具(ju)擦拭干净(jing)，其上(shang)(shang)不允(yun)许有(you)水滴，污物残留。100L、200L、300L的(de)磁(ci)(ci)力(li)搅(jiao)拌器，上(shang)(shang)海小聪科技都有(you)。虹口区五联磁(ci)(ci)力(li)搅(jiao)拌器送货上(shang)(shang)门

低(di)(di)温(wen)(wen)水(shui)浴槽(cao)(cao)原理(li)及注(zhu)意(yi)事项低(di)(di)温(wen)(wen)水(shui)浴槽(cao)(cao)可(ke)(ke)用(yong)于(yu)石(shi)油(you)、化工(gong)、电(dian)子仪(yi)(yi)表、物(wu)(wu)理(li)、化学、生(sheng)物(wu)(wu)工(gong)程、医药卫生(sheng)、生(sheng)命科学、轻(qing)工(gong)食品(pin)、物(wu)(wu)性测试(shi)及化学分(fen)析等(deng)研(yan)究部门(men)，高(gao)等(deng)院校(xiao)，企(qi)业(ye)质检(jian)及生(sheng)产部门(men)，为用(yong)户工(gong)作(zuo)(zuo)时提供一(yi)个(ge)热(re)(re)(re)冷受控(kong)，温(wen)(wen)度(du)均(jun)匀恒(heng)定的(de)(de)场源(yuan)，对试(shi)验样品(pin)或(huo)生(sheng)产的(de)(de)产品(pin)进行(xing)恒(heng)定温(wen)(wen)度(du)试(shi)验或(huo)测试(shi)，也可(ke)(ke)作(zuo)(zuo)为直接加(jia)(jia)热(re)(re)(re)或(huo)制(zhi)冷和辅助加(jia)(jia)热(re)(re)(re)或(huo)制(zhi)冷的(de)(de)热(re)(re)(re)源(yuan)或(huo)冷源(yuan)。低(di)(di)温(wen)(wen)水(shui)浴槽(cao)(cao)结构(gou)原理(li)。1、风冷式全(quan)封闭压(ya)缩(suo)机组(zu)制(zhi)冷，降温(wen)(wen)速(su)度(du)快。制(zhi)冷系统(tong)具有(you)(you)(you)(you)(you)过(guo)热(re)(re)(re)、过(guo)电(dian)流等(deng)多重保(bao)护装置。2、低(di)(di)温(wen)(wen)水(shui)浴槽(cao)(cao)设有(you)(you)(you)(you)(you)循环泵，可(ke)(ke)把槽(cao)(cao)内被恒(heng)温(wen)(wen)液体(ti)外(wai)(wai)引(yin)，建立第二恒(heng)温(wen)(wen)场，还(hai)可(ke)(ke)作(zuo)(zuo)为冷源(yuan)，把槽(cao)(cao)内被制(zhi)冷液体(ti)引(yin)到机外(wai)(wai)实验容器(qi)(qi)。3、低(di)(di)温(wen)(wen)恒(heng)温(wen)(wen)槽(cao)(cao)仪(yi)(yi)器(qi)(qi)外(wai)(wai)形(xing)尺寸小，结构(gou)紧凑，适(shi)宜(yi)于(yu)放在台桌上(shang)操作(zuo)(zuo)，仪(yi)(yi)器(qi)(qi)的(de)(de)工(gong)作(zuo)(zuo)槽(cao)(cao)内胆(dan)及机箱外(wai)(wai)壳全(quan)部采用(yong)不锈钢材料。4、采用(yong)微(wei)(wei)机智能(neng)控(kong)制(zhi)系统(tong)。触摸软(ruan)键快速(su)设定温(wen)(wen)度(du)，操作(zuo)(zuo)方便。5、微(wei)(wei)机修(xiu)正(zheng)温(wen)(wen)度(du)测量值偏(pian)差，数显(xian)精度(du)。具有(you)(you)(you)(you)(you)超温(wen)(wen)报警系统(tong)。低(di)(di)温(wen)(wen)水(shui)浴槽(cao)(cao)注(zhu)意(yi)事项（1）使(shi)用(yong)前应加(jia)(jia)入液体(ti)介质（2）使(shi)用(yong)电(dian)源(yuan)50HZ220V，电(dian)源(yuan)功率要(yao)大于(yu)或(huo)等(deng)于(yu)仪(yi)(yi)器(qi)(qi)总功率，电(dian)源(yuan)必须有(you)(you)(you)(you)(you)良好的(de)(de)“接地”装置。（3）仪(yi)(yi)器(qi)(qi)应安置于(yu)通风干燥(zao)处，后背及两侧离(li)开障碍物(wu)(wu)30mm距离(li)。（4）使(shi)用(yong)完毕，所有(you)(you)(you)(you)(you)开关(guan)(guan)要(yao)处于(yu)关(guan)(guan)机状(zhuang)态，拔下电(dian)源(yuan)插头。闵行(xing)区高(gao)低(di)(di)温(wen)(wen)磁力(li)搅(jiao)拌器(qi)(qi)多少钱搅(jiao)拌器(qi)(qi)有(you)(you)(you)(you)(you)哪(na)些特点？注(zhu)意(yi)事项有(you)(you)(you)(you)(you)哪(na)些？小聪知道(dao)您的(de)(de)需(xu)求。

压(ya)冲(chong)(chong)水(shui)(shui)(shui)管(guan)(guan)倾(qing)斜设置(zhi)在(zai)(zai)(zai)密封支撑(cheng)箱的(de)(de)(de)(de)(de)正面并(bing)与(yu)首先腔体相(xiang)(xiang)(xiang)连通(tong)，且高压(ya)冲(chong)(chong)水(shui)(shui)(shui)管(guan)(guan)的(de)(de)(de)(de)(de)倾(qing)斜方(fang)向对准叶(ye)片(pian)组(zu)件(jian)。所(suo)述(shu)(shu)搅(jiao)拌(ban)(ban)筒(tong)内(nei)(nei)设有(you)导电导热(re)(re)条。在(zai)(zai)(zai)其(qi)中(zhong)(zhong)一个(ge)实施例中(zhong)(zhong)，所(suo)述(shu)(shu)带(dai)(dai)加(jia)热(re)(re)功能(neng)的(de)(de)(de)(de)(de)永(yong)(yong)磁(ci)(ci)(ci)搅(jiao)拌(ban)(ban)器还(hai)(hai)包(bao)括备用冷却(que)(que)水(shui)(shui)(shui)进管(guan)(guan)，备用冷却(que)(que)水(shui)(shui)(shui)进管(guan)(guan)设置(zhi)在(zai)(zai)(zai)密封支撑(cheng)箱的(de)(de)(de)(de)(de)正面并(bing)与(yu)首先腔体相(xiang)(xiang)(xiang)连通(tong)。在(zai)(zai)(zai)其(qi)中(zhong)(zhong)一个(ge)实施例中(zhong)(zhong)，所(suo)述(shu)(shu)带(dai)(dai)加(jia)热(re)(re)功能(neng)的(de)(de)(de)(de)(de)永(yong)(yong)磁(ci)(ci)(ci)搅(jiao)拌(ban)(ban)器还(hai)(hai)包(bao)括测(ce)温(wen)装置(zhi)，测(ce)温(wen)装置(zhi)设置(zhi)在(zai)(zai)(zai)首先腔体内(nei)(nei)，用于测(ce)量(liang)首先腔体内(nei)(nei)的(de)(de)(de)(de)(de)温(wen)度。在(zai)(zai)(zai)其(qi)中(zhong)(zhong)一个(ge)实施例中(zhong)(zhong)，所(suo)述(shu)(shu)叶(ye)轮为圆环形。本发明(ming)的(de)(de)(de)(de)(de)优点及有(you)益效果(guo)(guo)：本发明(ming)利用永(yong)(yong)磁(ci)(ci)(ci)系(xi)组(zu)件(jian)，由从高压(ya)冲(chong)(chong)水(shui)(shui)(shui)管(guan)(guan)进入的(de)(de)(de)(de)(de)高压(ya)冲(chong)(chong)水(shui)(shui)(shui)带(dai)(dai)动(dong)叶(ye)轮转动(dong)，从而使(shi)得永(yong)(yong)磁(ci)(ci)(ci)系(xi)组(zu)件(jian)旋转，使(shi)相(xiang)(xiang)(xiang)邻二个(ge)永(yong)(yong)磁(ci)(ci)(ci)系(xi)组(zu)件(jian)的(de)(de)(de)(de)(de)n、s极(ji)互相(xiang)(xiang)(xiang)切换，产生(sheng)电磁(ci)(ci)(ci)感应搅(jiao)拌(ban)(ban)力，达到(dao)(dao)搅(jiao)拌(ban)(ban)效果(guo)(guo)；与(yu)此(ci)同(tong)时，高压(ya)冲(chong)(chong)水(shui)(shui)(shui)也冷却(que)(que)了旋转的(de)(de)(de)(de)(de)永(yong)(yong)磁(ci)(ci)(ci)系(xi)组(zu)件(jian)。本发明(ming)通(tong)过(guo)高速搅(jiao)拌(ban)(ban)，可(ke)以产生(sheng)电磁(ci)(ci)(ci)涡(wo)流效应，在(zai)(zai)(zai)电磁(ci)(ci)(ci)涡(wo)流范围(wei)内(nei)(nei)的(de)(de)(de)(de)(de)导电导热(re)(re)条，可(ke)以产生(sheng)热(re)(re)量(liang)，该热(re)(re)量(liang)可(ke)以烘烤搅(jiao)拌(ban)(ban)筒(tong)内(nei)(nei)的(de)(de)(de)(de)(de)物料(liao)水(shui)(shui)(shui)分，也可(ke)以加(jia)热(re)(re)搅(jiao)拌(ban)(ban)筒(tong)内(nei)(nei)的(de)(de)(de)(de)(de)其(qi)他物料(liao)进行(xing)还(hai)(hai)原反应，达到(dao)(dao)节能(neng)的(de)(de)(de)(de)(de)目的(de)(de)(de)(de)(de)。

先(xian)(xian)对(dui)其按钮、接(jie)线(xian)点、接(jie)触点进(jin)行(xing)(xing)清(qing)洁，检(jian)查外(wai)部控(kong)制键是否失灵。许多故障(zhang)(zhang)都(dou)是由脏污(wu)及(ji)导电尘块引起的(de)(de)。6、先(xian)(xian)电源后设备：电源部分的(de)(de)故障(zhang)(zhang)率在整(zheng)个故障(zhang)(zhang)设备中占的(de)(de)比(bi)例很高，所以(yi)(yi)先(xian)(xian)检(jian)修(xiu)电源往往可以(yi)(yi)事半(ban)功(gong)(gong)倍(bei)。7、先(xian)(xian)故障(zhang)(zhang)后调试(shi)：对(dui)于调试(shi)和(he)(he)故障(zhang)(zhang)并存的(de)(de)电气(qi)(qi)设备，应(ying)先(xian)(xian)排除故障(zhang)(zhang)，再进(jin)行(xing)(xing)调试(shi)，调试(shi)必须在电气(qi)(qi)线(xian)路速的(de)(de)前提下(xia)进(jin)行(xing)(xing)。8、先(xian)(xian)普(pu)遍后特(te)殊：因装配配件质量或(huo)其他(ta)设备故障(zhang)(zhang)而引起的(de)(de)故障(zhang)(zhang)，一般占常见故障(zhang)(zhang)的(de)(de)50%左右。电气(qi)(qi)设备的(de)(de)特(te)殊故障(zhang)(zhang)多为软故障(zhang)(zhang)，要靠经验(yan)和(he)(he)仪表来(lai)测量和(he)(he)维修(xiu)。我(wo)们在实(shi)验(yan)中出现电动搅(jiao)拌(ban)器(qi)损坏时，切不可焦(jiao)急，应(ying)当冷静应(ying)对(dui)，通过(guo)以(yi)(yi)上我(wo)们讲(jiang)解的(de)(de)8点进(jin)行(xing)(xing)相应(ying)处理，先(xian)(xian)判断故障(zhang)(zhang)原因，再对(dui)症下(xia)药(yao)，定能(neng)事半(ban)功(gong)(gong)倍(bei)，此(ci)外(wai)我(wo)们在日常使用时也(ye)要注意电动搅(jiao)拌(ban)器(qi)的(de)(de)保(bao)养。购买磁(ci)力搅(jiao)拌(ban)器(qi)的(de)(de)注意事项有哪(na)些？

小(xiao)聪科技专注于平行(xing)反应(ying)(ying)合成工(gong)(gong)作(zuo)(zuo)(zuo)站(zhan)类(lei)(lei)恒(heng)(heng)温(wen)(wen)磁力(li)搅(jiao)(jiao)拌(ban)(ban)(ban)(ban)器(qi)(qi)特(te)点：这(zhei)类(lei)(lei)搅(jiao)(jiao)拌(ban)(ban)(ban)(ban)器(qi)(qi)能(neng)同(tong)(tong)时(shi)处理(li)多(duo)个(ge)加(jia)(jia)热(re)，搅(jiao)(jiao)拌(ban)(ban)(ban)(ban)，控(kong)温(wen)(wen)步(bu)(bu)骤进(jin)程。速(su)率达到(dao)工(gong)(gong)作(zuo)(zuo)(zuo)站(zhan)级(ji)别，操作(zuo)(zuo)(zuo)也相对非常(chang)安全(quan)，方便(bian)。加(jia)(jia)热(re)板(ban)尺寸(cun)（mm）180*180加(jia)(jia)热(re)板(ban)材质(zhi)铝制转(zhuan)速(su)范围（rpm）0-1500模块转(zhuan)速(su)偏(pian)差(cha)(cha)5%容量(L)20温(wen)(wen)控(kong)范围室温(wen)(wen)-400℃温(wen)(wen)控(kong)偏(pian)差(cha)(cha)±°C[1]恒(heng)(heng)温(wen)(wen)磁力(li)搅(jiao)(jiao)拌(ban)(ban)(ban)(ban)器(qi)(qi)使(shi)用(yong)步(bu)(bu)骤编(bian)(bian)辑(ji)首先请(qing)检(jian)查随整机(ji)配件(jian)是(shi)(shi)(shi)否齐全(quan)，然后按顺序先装(zhuang)好(hao)夹具。工(gong)(gong)作(zuo)(zuo)(zuo)台(tai)类(lei)(lei)型(xing)和(he)数显类(lei)(lei)型(xing)都(dou)包含有调控(kong)器(qi)(qi)，检(jian)查调控(kong)器(qi)(qi)是(shi)(shi)(shi)否连接完(wan)好(hao)。加(jia)(jia)入(ru)(ru)溶液把搅(jiao)(jiao)拌(ban)(ban)(ban)(ban)子(zi)(zi)放在烧杯溶液中(zhong)，将控(kong)温(wen)(wen)探头固(gu)定在橡胶夹头上，加(jia)(jia)热(re)头插(cha)入(ru)(ru)至(zhi)溶液中(zhong)，不能(neng)影响(xiang)到(dao)搅(jiao)(jiao)拌(ban)(ban)(ban)(ban)子(zi)(zi)，然后先插(cha)上仪器(qi)(qi)接插(cha)的电(dian)(dian)源(yuan)插(cha)头，再接通电(dian)(dian)源(yuan)打(da)开电(dian)(dian)源(yuan)调速(su)开关，指标灯(deng)亮，即开始工(gong)(gong)作(zuo)(zuo)(zuo)。调速(su)是(shi)(shi)(shi)由低(di)速(su)逐步(bu)(bu)调至(zhi)高速(su)，不允(yun)许高速(su)档直(zhi)接起动，以免(mian)搅(jiao)(jiao)拌(ban)(ban)(ban)(ban)子(zi)(zi)不同(tong)(tong)步(bu)(bu)，引(yin)起跳动。加(jia)(jia)热(re)有开关控(kong)制，打(da)开加(jia)(jia)热(re)源(yuan)开关，选择(ze)所需的温(wen)(wen)度(du)，绿灯(deng)亮表明(ming)(ming)加(jia)(jia)热(re)盘工(gong)(gong)作(zuo)(zuo)(zuo)，红灯(deng)亮表明(ming)(ming)停(ting)止(zhi)加(jia)(jia)热(re)盘工(gong)(gong)作(zuo)(zuo)(zuo)，此时(shi)进(jin)入(ru)(ru)恒(heng)(heng)温(wen)(wen)状态，不工(gong)(gong)作(zuo)(zuo)(zuo)时(shi)应(ying)(ying)切(qie)断电(dian)(dian)源(yuan)，为确保安全(quan)，使(shi)用(yong)时(shi)请(qing)接上地线(xian)．仪器(qi)(qi)应(ying)(ying)保持清洁(jie)干燥，严禁(jin)溶液进(jin)入(ru)(ru)机(ji)内，以免(mian)损坏机(ji)件(jian)防止(zhi)剧烈(lie)震动．恒(heng)(heng)温(wen)(wen)磁力(li)搅(jiao)(jiao)拌(ban)(ban)(ban)(ban)器(qi)(qi)注意事项编(bian)(bian)辑(ji)1.搅(jiao)(jiao)拌(ban)(ban)(ban)(ban)时(shi)发现搅(jiao)(jiao)拌(ban)(ban)(ban)(ban)子(zi)(zi)跳动或不搅(jiao)(jiao)拌(ban)(ban)(ban)(ban)时(shi)，请(qing)切(qie)断电(dian)(dian)源(yuan)检(jian)查一(yi)下，电(dian)(dian)压(ya)是(shi)(shi)(shi)否在220±10V之间(jian)。磁力(li)搅(jiao)(jiao)拌(ban)(ban)(ban)(ban)器(qi)(qi)的磁子(zi)(zi)可根据实(shi)验需求更(geng)换，方便(bian)实(shi)验的灵活性和(he)多(duo)样(yang)性。黄浦区(qu)十联磁力(li)搅(jiao)(jiao)拌(ban)(ban)(ban)(ban)器(qi)(qi)经销商

磁力(li)搅拌器加热能持续多久(jiu)？虹口区五联磁力(li)搅拌器送(song)货上门

小聪(cong)磁(ci)(ci)(ci)力(li)(li)搅(jiao)(jiao)(jiao)拌(ban)(ban)器是(shi)用(yong)于液(ye)体(ti)混(hun)合(he)的(de)(de)(de)实(shi)验(yan)室(shi)仪(yi)器，主要用(yong)于搅(jiao)(jiao)(jiao)拌(ban)(ban)或(huo)同时(shi)(shi)加(jia)热搅(jiao)(jiao)(jiao)拌(ban)(ban)低粘(zhan)稠(chou)度(du)的(de)(de)(de)液(ye)体(ti)或(huo)固液(ye)混(hun)合(he)物(wu)。其基(ji)本(ben)(ben)原(yuan)理(li)(li)是(shi)利(li)用(yong)磁(ci)(ci)(ci)场的(de)(de)(de)同性(xing)(xing)相(xiang)斥、异性(xing)(xing)相(xiang)吸的(de)(de)(de)原(yuan)理(li)(li)，使(shi)用(yong)磁(ci)(ci)(ci)场推(tui)(tui)动放置(zhi)在容(rong)器中带磁(ci)(ci)(ci)性(xing)(xing)的(de)(de)(de)搅(jiao)(jiao)(jiao)拌(ban)(ban)子(zi)进行(xing)圆周运转(zhuan)(zhuan)(zhuan)，从而达到(dao)搅(jiao)(jiao)(jiao)拌(ban)(ban)液(ye)体(ti)的(de)(de)(de)目的(de)(de)(de)。配(pei)合(he)加(jia)热温(wen)(wen)度(du)控制系统(tong)，可以(yi)根据具(ju)体(ti)的(de)(de)(de)实(shi)验(yan)要求加(jia)热并(bing)控制样(yang)本(ben)(ben)温(wen)(wen)度(du)，维(wei)持(chi)实(shi)验(yan)条件(jian)所需的(de)(de)(de)温(wen)(wen)度(du)条件(jian)，保证液(ye)体(ti)混(hun)合(he)达到(dao)实(shi)验(yan)需求。工作原(yuan)理(li)(li)磁(ci)(ci)(ci)力(li)(li)搅(jiao)(jiao)(jiao)拌(ban)(ban)器利(li)用(yong)磁(ci)(ci)(ci)性(xing)(xing)物(wu)质同性(xing)(xing)相(xiang)斥的(de)(de)(de)特性(xing)(xing)，通(tong)(tong)(tong)过(guo)(guo)不断(duan)变(bian)换基(ji)座(zuo)的(de)(de)(de)两端的(de)(de)(de)极性(xing)(xing)来推(tui)(tui)动磁(ci)(ci)(ci)性(xing)(xing)搅(jiao)(jiao)(jiao)拌(ban)(ban)子(zi)转(zhuan)(zhuan)(zhuan)动，通(tong)(tong)(tong)过(guo)(guo)磁(ci)(ci)(ci)性(xing)(xing)搅(jiao)(jiao)(jiao)拌(ban)(ban)子(zi)的(de)(de)(de)转(zhuan)(zhuan)(zhuan)动带动样(yang)本(ben)(ben)旋(xuan)转(zhuan)(zhuan)(zhuan)，使(shi)样(yang)本(ben)(ben)均匀(yun)混(hun)合(he)；通(tong)(tong)(tong)过(guo)(guo)底(di)部温(wen)(wen)度(du)控制板(ban)对样(yang)本(ben)(ben)加(jia)热，配(pei)合(he)磁(ci)(ci)(ci)性(xing)(xing)搅(jiao)(jiao)(jiao)拌(ban)(ban)子(zi)的(de)(de)(de)旋(xuan)转(zhuan)(zhuan)(zhuan)使(shi)样(yang)本(ben)(ben)均匀(yun)受热，达到(dao)指(zhi)定(ding)的(de)(de)(de)温(wen)(wen)度(du)；通(tong)(tong)(tong)过(guo)(guo)加(jia)热功率调节，使(shi)升(sheng)温(wen)(wen)速度(du)可控，以(yi)适用(yong)更(geng)广阔的(de)(de)(de)样(yang)本(ben)(ben)处(chu)理(li)(li)过(guo)(guo)程(cheng)。一(yi)般的(de)(de)(de)磁(ci)(ci)(ci)力(li)(li)搅(jiao)(jiao)(jiao)拌(ban)(ban)器具(ju)有(you)搅(jiao)(jiao)(jiao)拌(ban)(ban)和加(jia)热两个(ge)作用(yong)。具(ju)体(ti)为：一(yi)个(ge)作用(yong)，使(shi)反应物(wu)混(hun)合(he)均匀(yun)，使(shi)温(wen)(wen)度(du)均匀(yun)；另一(yi)个(ge)作用(yong)，加(jia)快(kuai)反应速度(du)，或(huo)者蒸发速度(du)，缩短时(shi)(shi)间。注意事项1、搅(jiao)(jiao)(jiao)拌(ban)(ban)时(shi)(shi)发现(xian)搅(jiao)(jiao)(jiao)拌(ban)(ban)子(zi)跳(tiao)动或(huo)不搅(jiao)(jiao)(jiao)拌(ban)(ban)时(shi)(shi)，请切(qie)断(duan)电源检查一(yi)下烧杯底(di)是(shi)否平、位置(zhi)是(shi)否正、同时(shi)(shi)请您(nin)测一(yi)下，现(xian)用(yong)的(de)(de)(de)电压是(shi)在220V±10V之(zhi)间虹口(kou)区五联磁(ci)(ci)(ci)力(li)(li)搅(jiao)(jiao)(jiao)拌(ban)(ban)器送(song)货上(shang)门

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