拉(la)(la)床(chuang)(chuang)(chuang)是(shi)一种机床(chuang)(chuang)(chuang)，主要(yao)(yao)(yao)用于(yu)加(jia)(jia)(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)旋转对称(cheng)的(de)(de)(de)零(ling)(ling)件(jian)(jian)(jian)，如轴(zhou)、轮(lun)(lun)毂(gu)、齿(chi)轮(lun)(lun)等。它的(de)(de)(de)主要(yao)(yao)(yao)用途是(shi)在(zai)金属加(jia)(jia)(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)领域中(zhong)，用于(yu)加(jia)(jia)(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)各(ge)(ge)(ge)(ge)种旋转对称(cheng)的(de)(de)(de)零(ling)(ling)件(jian)(jian)(jian)，包(bao)括内外圆柱面(mian)(mian)、球(qiu)(qiu)面(mian)(mian)、锥(zhui)面(mian)(mian)、螺(luo)纹(wen)等。拉(la)(la)床(chuang)(chuang)(chuang)的(de)(de)(de)加(jia)(jia)(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)精度(du)(du)高，加(jia)(jia)(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)效率也比较高，因此在(zai)制(zhi)造各(ge)(ge)(ge)(ge)种机械设备和(he)零(ling)(ling)部件(jian)(jian)(jian)时，都会使用拉(la)(la)床(chuang)(chuang)(chuang)进行加(jia)(jia)(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)。拉(la)(la)床(chuang)(chuang)(chuang)的(de)(de)(de)主要(yao)(yao)(yao)用途包(bao)括以(yi)(yi)(yi)下几个方面(mian)(mian)：1.加(jia)(jia)(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)轴(zhou)类零(ling)(ling)件(jian)(jian)(jian)：拉(la)(la)床(chuang)(chuang)(chuang)可(ke)(ke)以(yi)(yi)(yi)加(jia)(jia)(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)各(ge)(ge)(ge)(ge)种轴(zhou)类零(ling)(ling)件(jian)(jian)(jian)，如汽车发动(dong)(dong)机的(de)(de)(de)曲轴(zhou)、凸轮(lun)(lun)轴(zhou)、传(chuan)动(dong)(dong)轴(zhou)等。这(zhei)些(xie)(xie)零(ling)(ling)件(jian)(jian)(jian)需(xu)要(yao)(yao)(yao)高精度(du)(du)的(de)(de)(de)加(jia)(jia)(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)，以(yi)(yi)(yi)确(que)保(bao)其(qi)(qi)运转平(ping)稳、可(ke)(ke)靠(kao)。2.加(jia)(jia)(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)齿(chi)轮(lun)(lun)：拉(la)(la)床(chuang)(chuang)(chuang)可(ke)(ke)以(yi)(yi)(yi)加(jia)(jia)(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)各(ge)(ge)(ge)(ge)种齿(chi)轮(lun)(lun)，包(bao)括直(zhi)齿(chi)轮(lun)(lun)、斜(xie)齿(chi)轮(lun)(lun)、锥(zhui)齿(chi)轮(lun)(lun)等。这(zhei)些(xie)(xie)齿(chi)轮(lun)(lun)需(xu)要(yao)(yao)(yao)高精度(du)(du)的(de)(de)(de)加(jia)(jia)(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)，以(yi)(yi)(yi)确(que)保(bao)其(qi)(qi)传(chuan)动(dong)(dong)效率和(he)寿命。3.加(jia)(jia)(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)螺(luo)纹(wen)：拉(la)(la)床(chuang)(chuang)(chuang)可(ke)(ke)以(yi)(yi)(yi)加(jia)(jia)(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)各(ge)(ge)(ge)(ge)种螺(luo)纹(wen)，包(bao)括内螺(luo)纹(wen)和(he)外螺(luo)纹(wen)。这(zhei)些(xie)(xie)螺(luo)纹(wen)需(xu)要(yao)(yao)(yao)高精度(du)(du)的(de)(de)(de)加(jia)(jia)(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)，以(yi)(yi)(yi)确(que)保(bao)其(qi)(qi)与(yu)(yu)其(qi)(qi)他零(ling)(ling)件(jian)(jian)(jian)的(de)(de)(de)配(pei)合(he)(he)精度(du)(du)。4.加(jia)(jia)(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)球(qiu)(qiu)面(mian)(mian)：拉(la)(la)床(chuang)(chuang)(chuang)可(ke)(ke)以(yi)(yi)(yi)加(jia)(jia)(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)各(ge)(ge)(ge)(ge)种球(qiu)(qiu)面(mian)(mian)，如轴(zhou)承外圈、传(chuan)动(dong)(dong)轴(zhou)的(de)(de)(de)球(qiu)(qiu)头等。这(zhei)些(xie)(xie)球(qiu)(qiu)面(mian)(mian)需(xu)要(yao)(yao)(yao)高精度(du)(du)的(de)(de)(de)加(jia)(jia)(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)，以(yi)(yi)(yi)确(que)保(bao)其(qi)(qi)与(yu)(yu)其(qi)(qi)他零(ling)(ling)件(jian)(jian)(jian)的(de)(de)(de)配(pei)合(he)(he)精度(du)(du)。拉(la)(la)床(chuang)(chuang)(chuang)的(de)(de)(de)加(jia)(jia)(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)过程中(zhong)需(xu)要(yao)(yao)(yao)注(zhu)意与(yu)(yu)客户的(de)(de)(de)沟通(tong)和(he)合(he)(he)作，满足客户的(de)(de)(de)需(xu)求(qiu)和(he)要(yao)(yao)(yao)求(qiu)。重庆连续拉(la)(la)床(chuang)(chuang)(chuang)哪(na)家(jia)好(hao)

拉(la)床(chuang)的(de)(de)常(chang)见配件(jian)(jian)包(bao)(bao)括(kuo)：1.刀(dao)(dao)架：用(yong)于(yu)(yu)(yu)(yu)固(gu)定(ding)刀(dao)(dao)具(ju)和(he)(he)(he)刀(dao)(dao)杆，支撑(cheng)(cheng)切(qie)削过(guo)程(cheng)中(zhong)的(de)(de)刀(dao)(dao)具(ju)。2.刀(dao)(dao)杆：用(yong)于(yu)(yu)(yu)(yu)固(gu)定(ding)刀(dao)(dao)具(ju)，传(chuan)递切(qie)削力和(he)(he)(he)扭矩。3.刀(dao)(dao)具(ju)：用(yong)于(yu)(yu)(yu)(yu)切(qie)削工(gong)件(jian)(jian)的(de)(de)工(gong)具(ju)，包(bao)(bao)括(kuo)车刀(dao)(dao)、铣刀(dao)(dao)、钻(zuan)头等(deng)。4.支撑(cheng)(cheng)架：用(yong)于(yu)(yu)(yu)(yu)支撑(cheng)(cheng)工(gong)件(jian)(jian)，使其稳(wen)定(ding)地固(gu)定(ding)在拉(la)床(chuang)上(shang)。5.尾座(zuo)：用(yong)于(yu)(yu)(yu)(yu)支撑(cheng)(cheng)工(gong)件(jian)(jian)的(de)(de)末端，防(fang)止(zhi)(zhi)工(gong)件(jian)(jian)在切(qie)削过(guo)程(cheng)中(zhong)发(fa)生(sheng)振(zhen)动。6.润滑(hua)系(xi)统(tong)：用(yong)于(yu)(yu)(yu)(yu)给(ji)刀(dao)(dao)具(ju)和(he)(he)(he)工(gong)件(jian)(jian)提供润滑(hua)和(he)(he)(he)冷却，减少摩擦和(he)(he)(he)热量(liang)。7.电(dian)气控制系(xi)统(tong)：用(yong)于(yu)(yu)(yu)(yu)控制拉(la)床(chuang)的(de)(de)运行和(he)(he)(he)切(qie)削过(guo)程(cheng)，包(bao)(bao)括(kuo)电(dian)机、传(chuan)感器(qi)、PLC等(deng)。8.夹(jia)具(ju)：用(yong)于(yu)(yu)(yu)(yu)夹(jia)紧工(gong)件(jian)(jian)，使其固(gu)定(ding)在拉(la)床(chuang)上(shang)，以便进(jin)行切(qie)削加(jia)(jia)工(gong)。9.测(ce)量(liang)仪(yi)器(qi)：用(yong)于(yu)(yu)(yu)(yu)测(ce)量(liang)工(gong)件(jian)(jian)的(de)(de)尺寸和(he)(he)(he)形状，包(bao)(bao)括(kuo)卡尺、游标卡尺、高度(du)规等(deng)。10.床(chuang)身(shen)保护罩(zhao)：用(yong)于(yu)(yu)(yu)(yu)保护拉(la)床(chuang)的(de)(de)床(chuang)身(shen)和(he)(he)(he)机械部件(jian)(jian)，防(fang)止(zhi)(zhi)灰尘和(he)(he)(he)杂物(wu)进(jin)入，影(ying)响机器(qi)的(de)(de)正常(chang)运行。重(zhong)庆连(lian)续(xu)拉(la)床(chuang)哪家好拉(la)床(chuang)的(de)(de)加(jia)(jia)工(gong)过(guo)程(cheng)中(zhong)需要使用(yong)一(yi)些辅(fu)助工(gong)具(ju)和(he)(he)(he)夹(jia)具(ju)来(lai)保证加(jia)(jia)工(gong)精度(du)和(he)(he)(he)安全(quan)性(xing)。

拉床(chuang)是一种用(yong)(yong)于(yu)(yu)加工(gong)(gong)(gong)(gong)金属(shu)材料的(de)机床(chuang)，主要(yao)由(you)以下几(ji)个组件(jian)(jian)(jian)或部(bu)件(jian)(jian)(jian)组成：1.床(chuang)身(shen)：拉床(chuang)的(de)主体部(bu)分(fen)，通常由(you)铸铁或钢板(ban)制成，具有强度(du)高(gao)和(he)刚(gang)性，能(neng)(neng)够(gou)承(cheng)受(shou)加工(gong)(gong)(gong)(gong)过程(cheng)中的(de)振动(dong)(dong)(dong)(dong)(dong)(dong)和(he)负荷。2.主轴(zhou)(zhou)箱：包含主轴(zhou)(zhou)、主轴(zhou)(zhou)轴(zhou)(zhou)承(cheng)、齿轮传动(dong)(dong)(dong)(dong)(dong)(dong)等(deng)(deng)部(bu)件(jian)(jian)(jian)，用(yong)(yong)于(yu)(yu)驱动(dong)(dong)(dong)(dong)(dong)(dong)工(gong)(gong)(gong)(gong)件(jian)(jian)(jian)旋转，实(shi)现(xian)加工(gong)(gong)(gong)(gong)操(cao)(cao)作。3.床(chuang)头箱：包含进给机构、切削液系(xi)(xi)统(tong)、电气控(kong)(kong)制系(xi)(xi)统(tong)等(deng)(deng)部(bu)件(jian)(jian)(jian)，用(yong)(yong)于(yu)(yu)控(kong)(kong)制加工(gong)(gong)(gong)(gong)过程(cheng)中的(de)进给速(su)度(du)、切削液流量、电气信号等(deng)(deng)参数(shu)。4.滑板(ban)：用(yong)(yong)于(yu)(yu)支撑(cheng)工(gong)(gong)(gong)(gong)件(jian)(jian)(jian)和(he)刀具，能(neng)(neng)够(gou)在床(chuang)身(shen)上(shang)沿(yan)着(zhe)X轴(zhou)(zhou)方(fang)向移(yi)(yi)动(dong)(dong)(dong)(dong)(dong)(dong)，实(shi)现(xian)加工(gong)(gong)(gong)(gong)操(cao)(cao)作。5.刀架(jia)：用(yong)(yong)于(yu)(yu)固(gu)定刀具，能(neng)(neng)够(gou)在滑板(ban)上(shang)沿(yan)着(zhe)Z轴(zhou)(zhou)方(fang)向移(yi)(yi)动(dong)(dong)(dong)(dong)(dong)(dong)，实(shi)现(xian)加工(gong)(gong)(gong)(gong)操(cao)(cao)作。6.尾(wei)架(jia)：用(yong)(yong)于(yu)(yu)支撑(cheng)长工(gong)(gong)(gong)(gong)件(jian)(jian)(jian)，能(neng)(neng)够(gou)在床(chuang)身(shen)上(shang)沿(yan)着(zhe)Z轴(zhou)(zhou)方(fang)向移(yi)(yi)动(dong)(dong)(dong)(dong)(dong)(dong)，实(shi)现(xian)加工(gong)(gong)(gong)(gong)操(cao)(cao)作。7.液压系(xi)(xi)统(tong)：用(yong)(yong)于(yu)(yu)控(kong)(kong)制滑板(ban)、刀架(jia)、尾(wei)架(jia)等(deng)(deng)部(bu)件(jian)(jian)(jian)的(de)移(yi)(yi)动(dong)(dong)(dong)(dong)(dong)(dong)和(he)定位，提(ti)高(gao)加工(gong)(gong)(gong)(gong)精(jing)度(du)和(he)效率(lv)。8.自动(dong)(dong)(dong)(dong)(dong)(dong)化系(xi)(xi)统(tong)：包括数(shu)控(kong)(kong)系(xi)(xi)统(tong)、编程(cheng)软件(jian)(jian)(jian)、传感器等(deng)(deng)部(bu)件(jian)(jian)(jian)，能(neng)(neng)够(gou)实(shi)现(xian)自动(dong)(dong)(dong)(dong)(dong)(dong)化加工(gong)(gong)(gong)(gong)，提(ti)高(gao)生产效率(lv)和(he)产品质量。以上(shang)是拉床(chuang)的(de)主要(yao)组件(jian)(jian)(jian)或部(bu)件(jian)(jian)(jian)，它们的(de)协同作用(yong)(yong)能(neng)(neng)够(gou)实(shi)现(xian)高(gao)精(jing)度(du)、高(gao)效率(lv)的(de)金属(shu)加工(gong)(gong)(gong)(gong)。

卧式(shi)拉(la)(la)床(chuang)是(shi)一种(zhong)金属切(qie)削机(ji)(ji)床(chuang)，用来加(jia)(jia)工(gong)(gong)(gong)孔(kong)眼(yan)或(huo)键槽(cao)。加(jia)(jia)工(gong)(gong)(gong)时，一般工(gong)(gong)(gong)件(jian)不动(dong)，拉(la)(la)刀做(zuo)直线运动(dong)切(qie)削。其特点是(shi)止回(hui)阀装于水平管(guan)道。卧式(shi)拉(la)(la)床(chuang)日常维(wei)护(hu)要点：(1)清洗(xi)机(ji)(ji)床(chuang)外表、导(dao)轨，修光毛(mao)刺(ci)，无(wu)锈蚀，无(wu)黄袍。(2)检(jian)(jian)查(cha)(cha)补齐手球、手柄、螺(luo)钉、螺(luo)帽。(3)检(jian)(jian)查(cha)(cha)压力(li)表是(shi)否灵敏可靠(kao)。(4)检(jian)(jian)查(cha)(cha)油质、保持良好，清洗(xi)油池。(5)检(jian)(jian)查(cha)(cha)拉(la)(la)杆(gan)、螺(luo)杆(gan)、导(dao)轨是(shi)否拉(la)(la)毛(mao)。(6)调(diao)整(zheng)各部塞铁间(jian)隙(xi)。(7)清洗(xi)检(jian)(jian)查(cha)(cha)油泵、轴承及各阀类元件(jian)。(8)清洗(xi)冷(leng)却(que)液(ye)，无(wu)铁屑(xie)，无(wu)杂物。(9)管(guan)路(lu)畅通清洁，牢(lao)固(gu)。(10)根据情况调(diao)换冷(leng)却(que)油。拉(la)(la)床(chuang)的(de)加(jia)(jia)工(gong)(gong)(gong)速度快，可以(yi)大幅提(ti)高生产效(xiao)率。

拉(la)(la)(la)床(chuang)(chuang)(chuang)是(shi)(shi)一(yi)种(zhong)用于(yu)(yu)加工(gong)金属(shu)材(cai)料的(de)(de)(de)(de)(de)(de)(de)(de)(de)机(ji)(ji)(ji)床(chuang)(chuang)(chuang)，其(qi)可(ke)靠(kao)性(xing)(xing)是(shi)(shi)非常(chang)重(zhong)要(yao)(yao)的(de)(de)(de)(de)(de)(de)(de)(de)(de)。一(yi)般(ban)来(lai)说，拉(la)(la)(la)床(chuang)(chuang)(chuang)的(de)(de)(de)(de)(de)(de)(de)(de)(de)可(ke)靠(kao)性(xing)(xing)取决于(yu)(yu)其(qi)设(she)(she)计、制(zhi)造和(he)维(wei)护(hu)(hu)的(de)(de)(de)(de)(de)(de)(de)(de)(de)质(zhi)量。首(shou)先，设(she)(she)计是(shi)(shi)影响(xiang)拉(la)(la)(la)床(chuang)(chuang)(chuang)可(ke)靠(kao)性(xing)(xing)的(de)(de)(de)(de)(de)(de)(de)(de)(de)关(guan)(guan)键因素(su)之(zhi)(zhi)一(yi)。设(she)(she)计者需要(yao)(yao)考虑到各(ge)(ge)种(zhong)因素(su)，如材(cai)料的(de)(de)(de)(de)(de)(de)(de)(de)(de)强(qiang)度、机(ji)(ji)(ji)床(chuang)(chuang)(chuang)的(de)(de)(de)(de)(de)(de)(de)(de)(de)结构、传动系(xi)统(tong)的(de)(de)(de)(de)(de)(de)(de)(de)(de)可(ke)靠(kao)性(xing)(xing)等(deng)等(deng)。如果设(she)(she)计不合理(li)，就会导致(zhi)机(ji)(ji)(ji)床(chuang)(chuang)(chuang)在使用过(guo)程(cheng)中出现(xian)故障，影响(xiang)生(sheng)(sheng)产(chan)效率(lv)(lv)。其(qi)次，制(zhi)造质(zhi)量也(ye)是(shi)(shi)影响(xiang)拉(la)(la)(la)床(chuang)(chuang)(chuang)可(ke)靠(kao)性(xing)(xing)的(de)(de)(de)(de)(de)(de)(de)(de)(de)重(zhong)要(yao)(yao)因素(su)。制(zhi)造过(guo)程(cheng)中需要(yao)(yao)严格控制(zhi)各(ge)(ge)个(ge)环节，如材(cai)料的(de)(de)(de)(de)(de)(de)(de)(de)(de)选择、加工(gong)精度、装配(pei)质(zhi)量等(deng)等(deng)。如果制(zhi)造质(zhi)量不过(guo)关(guan)(guan)，就会导致(zhi)机(ji)(ji)(ji)床(chuang)(chuang)(chuang)在使用过(guo)程(cheng)中出现(xian)问题。除此(ci)之(zhi)(zhi)外(wai)，维(wei)护(hu)(hu)也(ye)是(shi)(shi)保(bao)证(zheng)拉(la)(la)(la)床(chuang)(chuang)(chuang)可(ke)靠(kao)性(xing)(xing)的(de)(de)(de)(de)(de)(de)(de)(de)(de)关(guan)(guan)键因素(su)之(zhi)(zhi)一(yi)。定期检查和(he)维(wei)护(hu)(hu)机(ji)(ji)(ji)床(chuang)(chuang)(chuang)，及时更(geng)换磨损部(bu)件，保(bao)持机(ji)(ji)(ji)床(chuang)(chuang)(chuang)的(de)(de)(de)(de)(de)(de)(de)(de)(de)良好状态(tai)，可(ke)以(yi)延长机(ji)(ji)(ji)床(chuang)(chuang)(chuang)的(de)(de)(de)(de)(de)(de)(de)(de)(de)使用寿命，提(ti)高生(sheng)(sheng)产(chan)效率(lv)(lv)。总的(de)(de)(de)(de)(de)(de)(de)(de)(de)来(lai)说，拉(la)(la)(la)床(chuang)(chuang)(chuang)的(de)(de)(de)(de)(de)(de)(de)(de)(de)可(ke)靠(kao)性(xing)(xing)取决于(yu)(yu)设(she)(she)计、制(zhi)造和(he)维(wei)护(hu)(hu)的(de)(de)(de)(de)(de)(de)(de)(de)(de)质(zhi)量。只(zhi)有(you)在这(zhei)三(san)个(ge)方面都做好了，才能保(bao)证(zheng)拉(la)(la)(la)床(chuang)(chuang)(chuang)的(de)(de)(de)(de)(de)(de)(de)(de)(de)可(ke)靠(kao)性(xing)(xing)。拉(la)(la)(la)床(chuang)(chuang)(chuang)的(de)(de)(de)(de)(de)(de)(de)(de)(de)加工(gong)精度高，可(ke)以(yi)满足各(ge)(ge)种(zhong)精密加工(gong)要(yao)(yao)求(qiu)。天津拉(la)(la)(la)床(chuang)(chuang)(chuang)怎么购买

拉床的应用范围(wei)广阔，包(bao)括汽(qi)车、航空、船舶等多个领域。重庆连续(xu)拉床哪家(jia)好(hao)

拉(la)(la)(la)床(chuang)在以下行业(ye)(ye)(ye)(ye)中(zhong)得到了应用(yong)(yong)：1.机(ji)械制造业(ye)(ye)(ye)(ye)：拉(la)(la)(la)床(chuang)是机(ji)械制造业(ye)(ye)(ye)(ye)中(zhong)常用(yong)(yong)的加(jia)工(gong)(gong)设备，用(yong)(yong)于(yu)加(jia)工(gong)(gong)各(ge)种轴类、孔类零件。2.航(hang)(hang)空航(hang)(hang)天工(gong)(gong)业(ye)(ye)(ye)(ye)：拉(la)(la)(la)床(chuang)用(yong)(yong)于(yu)加(jia)工(gong)(gong)飞(fei)机(ji)、火(huo)箭等航(hang)(hang)空航(hang)(hang)天器的零部(bu)件。3.汽车制造业(ye)(ye)(ye)(ye)：拉(la)(la)(la)床(chuang)用(yong)(yong)于(yu)加(jia)工(gong)(gong)汽车发(fa)动机(ji)、变速器等零部(bu)件。4.铁(tie)路(lu)运(yun)输(shu)业(ye)(ye)(ye)(ye)：拉(la)(la)(la)床(chuang)用(yong)(yong)于(yu)加(jia)工(gong)(gong)铁(tie)路(lu)车辆的轴承、轮轴等零部(bu)件。5.石油(you)(you)化(hua)工(gong)(gong)业(ye)(ye)(ye)(ye)：拉(la)(la)(la)床(chuang)用(yong)(yong)于(yu)加(jia)工(gong)(gong)石油(you)(you)化(hua)工(gong)(gong)设备的轴类、孔类零件。6.电力工(gong)(gong)业(ye)(ye)(ye)(ye)：拉(la)(la)(la)床(chuang)用(yong)(yong)于(yu)加(jia)工(gong)(gong)电机(ji)、发(fa)电机(ji)等电力设备的轴类、孔类零件。在使用(yong)(yong)拉(la)(la)(la)床(chuang)时，需要(yao)注意安全(quan)，避免操作失(shi)误导致(zhi)事(shi)故发(fa)生。重庆连续拉(la)(la)(la)床(chuang)哪家好

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