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电池监控参考价

发布时间:    来源:东莞富发玻璃制品有限公司   阅览次数:33次

电(dian)(dian)池(chi)(chi)(chi)(chi)(chi)的(de)(de)(de)(de)(de)(de)使(shi)用蓄电(dian)(dian)池(chi)(chi)(chi)(chi)(chi)出现了(le)很多(duo)以(yi)前未(wei)遇到(dao)的(de)(de)(de)(de)(de)(de)新问(wen)题,例如电(dian)(dian)池(chi)(chi)(chi)(chi)(chi)壳变(bian)形、电(dian)(dian)解液渗漏(lou)、容(rong)量不足、电(dian)(dian)池(chi)(chi)(chi)(chi)(chi)端电(dian)(dian)压(ya)不均匀等。实践证明(ming),铅酸(suan)免维(wei)(wei)(wei)护(hu)蓄电(dian)(dian)池(chi)(chi)(chi)(chi)(chi)端电(dian)(dian)压(ya)与放电(dian)(dian)能力(li)无相关性。铅酸(suan)免维(wei)(wei)(wei)护(hu)蓄电(dian)(dian)池(chi)(chi)(chi)(chi)(chi)和电(dian)(dian)池(chi)(chi)(chi)(chi)(chi)组(zu)在运行过程中,随着使(shi)用时(shi)(shi)间的(de)(de)(de)(de)(de)(de)增(zeng)加必然会(hui)有(you)个别(bie)或(huo)部分电(dian)(dian)池(chi)(chi)(chi)(chi)(chi)因内(nei)阻(zu)变(bian)大,呈(cheng)退行性老(lao)化现象,整组(zu)电(dian)(dian)池(chi)(chi)(chi)(chi)(chi)的(de)(de)(de)(de)(de)(de)容(rong)量是以(yi)状况(kuang)较差(cha)的(de)(de)(de)(de)(de)(de)那一块(kuai)电(dian)(dian)池(chi)(chi)(chi)(chi)(chi)的(de)(de)(de)(de)(de)(de)容(rong)量值为(wei)(wei)准,而不是以(yi)平均值或(huo)额定值( 初始值) 为(wei)(wei)准。当(dang)电(dian)(dian)池(chi)(chi)(chi)(chi)(chi)的(de)(de)(de)(de)(de)(de)实际容(rong)量下降到(dao)其本身(shen)额定容(rong)量的(de)(de)(de)(de)(de)(de)90%以(yi)下时(shi)(shi),电(dian)(dian)池(chi)(chi)(chi)(chi)(chi)便(bian)(bian)进入(ru)衰(shuai)退期(qi)(qi);当(dang)电(dian)(dian)池(chi)(chi)(chi)(chi)(chi)容(rong)量下降到(dao)原来的(de)(de)(de)(de)(de)(de)80%以(yi)下时(shi)(shi),电(dian)(dian)池(chi)(chi)(chi)(chi)(chi)便(bian)(bian)进入(ru)急剧衰(shuai)退状况(kuang)。衰(shuai)退期(qi)(qi)很短,这时(shi)(shi)电(dian)(dian)池(chi)(chi)(chi)(chi)(chi)组(zu)已(yi)存在极大的(de)(de)(de)(de)(de)(de)事故(gu)隐患(huan)。而使(shi)用单(dan)位和管理(li)单(dan)位,往往只重视备(bei)用电(dian)(dian)源(yuan)的(de)(de)(de)(de)(de)(de)设(she)备(bei)部分的(de)(de)(de)(de)(de)(de)维(wei)(wei)(wei)护(hu)和管理(li),忽视电(dian)(dian)池(chi)(chi)(chi)(chi)(chi)组(zu)的(de)(de)(de)(de)(de)(de)重大作用,殊不知断电(dian)(dian)的(de)(de)(de)(de)(de)(de)危险很大程度上(shang)就在电(dian)(dian)池(chi)(chi)(chi)(chi)(chi)组(zu)上(shang),然而电(dian)(dian)池(chi)(chi)(chi)(chi)(chi)衰(shuai)退后便(bian)(bian)造成(cheng)以(yi)下电(dian)(dian)池(chi)(chi)(chi)(chi)(chi)着火和损坏等严(yan)重事故(gu)的(de)(de)(de)(de)(de)(de)发生。电(dian)(dian)池(chi)(chi)(chi)(chi)(chi)监(jian)(jian)控的(de)(de)(de)(de)(de)(de)使(shi)用可以(yi)随时(shi)(shi)掌握电(dian)(dian)池(chi)(chi)(chi)(chi)(chi)状况(kuang),减(jian)少人(ren)工维(wei)(wei)(wei)护(hu)量。电(dian)(dian)池(chi)(chi)(chi)(chi)(chi)监(jian)(jian)控技(ji)术能够提高电(dian)(dian)池(chi)(chi)(chi)(chi)(chi)的(de)(de)(de)(de)(de)(de)利用率,为(wei)(wei)企(qi)业带来更多(duo)的(de)(de)(de)(de)(de)(de)经济效益。电(dian)(dian)池(chi)(chi)(chi)(chi)(chi)监(jian)(jian)控参考价

电池监控参考价,电池监控

电(dian)(dian)(dian)池监控(kong)厂(chang)家(jia)为什么(me)持续花大量精力在电(dian)(dian)(dian)池取电(dian)(dian)(dian)模(mo)式研究和提升(sheng)?外(wai)部(bu)供(gong)电(dian)(dian)(dian)模(mo)式,优点:避免了电(dian)(dian)(dian)池监控(kong)模(mo)块(kuai)(kuai)消耗的(de)(de)(de)电(dian)(dian)(dian)能问题。如模(mo)块(kuai)(kuai)由外(wai)部(bu)供(gong)电(dian)(dian)(dian),多个模(mo)块(kuai)(kuai)串(chuan)(chuan)接(jie)时电(dian)(dian)(dian)源线(xian)上的(de)(de)(de)电(dian)(dian)(dian)压会逐渐变(bian)低,影响驱动模(mo)块(kuai)(kuai),限制了同(tong)一通信总线(xian)上的(de)(de)(de)至大串(chuan)(chuan)接(jie)个数。监控(kong)的(de)(de)(de)电(dian)(dian)(dian)池数量越多,同(tong)时必(bi)须(xu)增加更(geng)多电(dian)(dian)(dian)源线(xian),给施(shi)工(gong)带(dai)来不(bu)方便。外(wai)部(bu)供(gong)电(dian)(dian)(dian)特点同(tong)时给每(mei)个模(mo)块(kuai)(kuai)工(gong)作(zuo)时带(dai)来互相干扰,较终导(dao)致模(mo)块(kuai)(kuai)不(bu)稳定(ding),这种方式限制超高(gao)精度的(de)(de)(de)实现。电(dian)(dian)(dian)池取电(dian)(dian)(dian)模(mo)式,优点:完全弥补了外(wai)部(bu)供(gong)电(dian)(dian)(dian)模(mo)式的(de)(de)(de)所有缺点。辽宁科华电(dian)(dian)(dian)池监控(kong)品(pin)牌在智能家(jia)居领(ling)域,电(dian)(dian)(dian)池监控(kong)技术能够(gou)实现智能化的(de)(de)(de)电(dian)(dian)(dian)力管(guan)理和优化能源消耗。

电池监控参考价,电池监控

电(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)监控的(de)(de)使(shi)用是(shi)非常有必要(yao)的(de)(de),蓄(xu)电(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)的(de)(de)标(biao)称容(rong)(rong)量一般是(shi)指25℃时,蓄(xu)电(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)的(de)(de)容(rong)(rong)量。在(zai)25℃以(yi)下时,每降(jiang)低10℃蓄(xu)电(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)可以(yi)放(fang)出的(de)(de)容(rong)(rong)量会减少(shao)一半。当温(wen)(wen)(wen)度(du)(du)大于25℃,蓄(xu)电(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)可以(yi)放(fang)出的(de)(de)容(rong)(rong)量会增加(jia),但是(shi)蓄(xu)电(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)的(de)(de)劣化速度(du)(du)也会加(jia)快。所以(yi)保持蓄(xu)电(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)处于合(he)理的(de)(de)运行温(wen)(wen)(wen)度(du)(du),对(dui)于保证蓄(xu)电(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)的(de)(de)容(rong)(rong)量和降(jiang)低蓄(xu)电(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)劣化速度(du)(du)都有重要(yao)意义。 阀(fa)控式蓄(xu)电(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)的(de)(de)容(rong)(rong)量是(shi)随(sui)着温(wen)(wen)(wen)度(du)(du)的(de)(de)变化而变化的(de)(de),维(wei)护人员必须认真(zhen)做(zuo)到机房(fang)空调正常运转, 要(yao)控制好蓄(xu)电(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)的(de)(de)温(wen)(wen)(wen)度(du)(du)使(shi)其保持在(zai)22℃~25℃以(yi)内(nei)。

电(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)监(jian)控的(de)维(wei)护:电(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)监(jian)控的(de)维(wei)护需(xu)要(yao)建立精(jing)确的(de)充(chong)(chong)电(dian)(dian)(dian)(dian)(dian)制度并加以实施,才能(neng)使(shi)该蓄(xu)(xu)电(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)达到较(jiao)优的(de)性能(neng)和(he)(he)较(jiao)长的(de)使(shi)用寿(shou)命,国(guo)内外(wai)大量(liang)研究的(de)结果表明,充(chong)(chong)电(dian)(dian)(dian)(dian)(dian)方(fang)式决定了蓄(xu)(xu)电(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)使(shi)用的(de)寿(shou)命,有(you)一些蓄(xu)(xu)电(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)与(yu)其说是使(shi)用坏的(de),不如(ru)说是充(chong)(chong)电(dian)(dian)(dian)(dian)(dian)方(fang)式不妥被损坏的(de)。充(chong)(chong)电(dian)(dian)(dian)(dian)(dian)电(dian)(dian)(dian)(dian)(dian)压选择的(de)不合理会(hui)影响蓄(xu)(xu)电(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)的(de)使(shi)用寿(shou)命。当(dang)(dang)蓄(xu)(xu)电(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)长期处(chu)于(yu)充(chong)(chong)电(dian)(dian)(dian)(dian)(dian)电(dian)(dian)(dian)(dian)(dian)压过低的(de)状态(tai)下,蓄(xu)(xu)电(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)会(hui)由于(yu)欠充(chong)(chong)而(er)形成硫(liu)酸(suan)盐,即蓄(xu)(xu)电(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)的(de)硫(liu)化失效;当(dang)(dang)蓄(xu)(xu)电(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)充(chong)(chong)电(dian)(dian)(dian)(dian)(dian)电(dian)(dian)(dian)(dian)(dian)压过高(gao)时,蓄(xu)(xu)电(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)的(de)失水(shui)现(xian)象会(hui)比较(jiao)严重。所以为蓄(xu)(xu)电(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)提供合理的(de)充(chong)(chong)电(dian)(dian)(dian)(dian)(dian)电(dian)(dian)(dian)(dian)(dian)压是蓄(xu)(xu)电(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)稳定运行的(de)前提条(tiao)件。电(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)监(jian)控系统能(neng)够实时监(jian)测电(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)组的(de)充(chong)(chong)电(dian)(dian)(dian)(dian)(dian)状态(tai)和(he)(he)电(dian)(dian)(dian)(dian)(dian)量(liang)剩余。

电池监控参考价,电池监控

机房蓄(xu)电(dian)池监控(kong)系(xi)统的协(xie)议(yi)类(lei)型:1、RS232:串行通(tong)信(xin)(xin)协(xie)议(yi),用于(yu)(yu)短距离(li)(li)传输,有(you)很多种波特(te)率(lv)可以选择。2、RS485:用于(yu)(yu)远距离(li)(li)的信(xin)(xin)息(xi)传输,能(neng)够(gou)接入多个(ge)蓄(xu)电(dian)池监控(kong)设备,每(mei)一(yi)个(ge)设备的地址都不(bu)一(yi)样。3、TCP/IP:实现不(bu)同网(wang)(wang)络的通(tong)讯,用于(yu)(yu)局域网(wang)(wang)、广域网(wang)(wang)的通(tong)讯,有(you)发送(song)数据、信(xin)(xin)息(xi)接收、返回数据等功能(neng)。4、Modbus:这(zhei)是标(biao)准、专业的数据连(lian)接方式,有(you)多种功能(neng),能(neng)够(gou)实现不(bu)同厂家(jia)设备的对接,实现集中监控(kong),应用很普遍(bian)。电(dian)池监控(kong)优(you)点:采(cai)集速度快,实时性高。电(dian)池监控(kong)系(xi)统可帮助企业提高能(neng)源效(xiao)率(lv),并确保员工安全。江苏电(dian)池监控(kong)配件

如果电池监(jian)控维护质(zhi)量较高,就能(neng)使阀控式蓄电池发挥(hui)至大的(de)效能(neng)和延长使用(yong)的(de)寿命。电池监(jian)控参考价

电(dian)(dian)(dian)(dian)(dian)池(chi)(chi)的(de)(de)(de)(de)安(an)装(zhuang)质量(liang)(liang),也(ye)包括储(chu)存、安(an)装(zhuang)、容(rong)量(liang)(liang)实验等多(duo)个(ge)方面(mian)(mian),这些(xie)方面(mian)(mian)均(jun)会直(zhi)接影响电(dian)(dian)(dian)(dian)(dian)池(chi)(chi)监控(kong),电(dian)(dian)(dian)(dian)(dian)池(chi)(chi)监控(kong)日(ri)后的(de)(de)(de)(de)运(yun)行和维(wei)护工作(zuo),因此在(zai)搬运(yun)储(chu)存的(de)(de)(de)(de)过程中应(ying)注(zhu)意不要(yao)(yao)发(fa)生碰撞(zhuang),在(zai)安(an)装(zhuang)过程中要(yao)(yao)注(zhu)意汇接条与(yu)(yu)(yu)电(dian)(dian)(dian)(dian)(dian)池(chi)(chi)极(ji)(ji)桩(zhuang)之间(jian)的(de)(de)(de)(de)吻合,小(xiao)心将不平的(de)(de)(de)(de)极(ji)(ji)桩(zhuang)整平。在(zai)紧固极(ji)(ji)桩(zhuang)时,所用的(de)(de)(de)(de)力(li)量(liang)(liang)既不能太大(da)也(ye)不能太小(xiao)。如太大(da),会使(shi)极(ji)(ji)桩(zhuang)内的(de)(de)(de)(de)铜(tong)套溢扣(kou),力(li)量(liang)(liang)太小(xiao)又会造成汇流(liu)条与(yu)(yu)(yu)极(ji)(ji)桩(zhuang)接触不良(liang),因此安(an)装(zhuang)中较好采用厂家提供的(de)(de)(de)(de)有(you)过力(li)脱扣(kou)的(de)(de)(de)(de)扳手,或(huo)按照厂家提供的(de)(de)(de)(de)参考公斤力(li),使(shi)用相应(ying)的(de)(de)(de)(de)公斤的(de)(de)(de)(de)扳手。在(zai)安(an)装(zhuang)中还应(ying)该注(zhu)意以下方面(mian)(mian): 要(yao)(yao)使(shi)蓄(xu)电(dian)(dian)(dian)(dian)(dian)池(chi)(chi)与(yu)(yu)(yu)电(dian)(dian)(dian)(dian)(dian)源之间(jian)各组蓄(xu)电(dian)(dian)(dian)(dian)(dian)池(chi)(chi)正(zheng)极(ji)(ji)与(yu)(yu)(yu)正(zheng)极(ji)(ji)、负(fu)(fu)极(ji)(ji)与(yu)(yu)(yu)负(fu)(fu)极(ji)(ji)的(de)(de)(de)(de)长(zhang)短尽量(liang)(liang)一(yi)致,以在(zai)大(da)电(dian)(dian)(dian)(dian)(dian)流(liu)放电(dian)(dian)(dian)(dian)(dian)时保持电(dian)(dian)(dian)(dian)(dian)池(chi)(chi)组间(jian)的(de)(de)(de)(de)运(yun)行平衡; 要(yao)(yao)使(shi)电(dian)(dian)(dian)(dian)(dian)池(chi)(chi)组的(de)(de)(de)(de)正(zheng)、负(fu)(fu)极(ji)(ji)汇流(liu)板与(yu)(yu)(yu)电(dian)(dian)(dian)(dian)(dian)池(chi)(chi)汇流(liu)条间(jian)的(de)(de)(de)(de)连接牢固;有(you)条件的(de)(de)(de)(de)可以在(zai)蓄(xu)电(dian)(dian)(dian)(dian)(dian)池(chi)(chi)端子处涂(tu)抹乳霜,防治腐蚀(shi);在(zai)安(an)装(zhuang)后,及时对蓄(xu)电(dian)(dian)(dian)(dian)(dian)池(chi)(chi)进(jin)行初(chu)充(chong)电(dian)(dian)(dian)(dian)(dian)。电(dian)(dian)(dian)(dian)(dian)池(chi)(chi)监控(kong)参考价

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高人 等 92 人赞同该回答

高人一等,的(de)不只(zhi)是高度,还有对生(sheng)活(huo)的(de)向往(wang)和追求(qiu)。在这(zhei)个(ge)喧嚣的(de)世界里,我们都在寻(xun)求(qiu)一种更加舒适和优雅的(de)生(sheng)活(huo)方式(shi)。而中亿(yi)百年,正是这(zhei)样一家企业,致力于满足你对生(sheng)活(huo)的(de)向往(wang),对品质的(de)追求(qiu)。我们的(de)产品涵盖了PP 。

郑州碳酸锂过滤螺旋管按需定制
第3楼
中心 等 43 人赞同该回答(da)

中(zhong)心(xin)网(wang)(wang)管(guan)在熔水(shui)化纤(xian)处理(li)过(guo)程中(zhong)的作用(yong)主要包括以下(xia)几个(ge)方面(mian):1.熔化:中(zhong)心(xin)网(wang)(wang)管(guan)通过(guo)高温(wen)熔水(shui),可(ke)(ke)以将纤(xian)维状物质(zhi)熔化为液态(tai),便于后(hou)续的处理(li)和应用(yong)。2.过(guo)滤(lv)和分离(li):中(zhong)心(xin)网(wang)(wang)管(guan)中(zhong)设置(zhi)有过(guo)滤(lv)和分离(li)设备,可(ke)(ke)以有效地过(guo)滤(lv) 。

安徽智能货架按需定制
第4楼
AG 等 24 人赞同该回答

AGV货架的优(you)势和应用AGVAutomatedGuidedVehicle)是一(yi)(yi)种(zhong)自(zi)动导引车,可以在无人操作的情(qing)况下,根据预设的路(lu)径和程序(xu),自(zi)动运输物品。AGV货架是一(yi)(yi)种(zhong)与AGV配合使(shi)用的货架,可以实现 。

福建大型打磨机器人抛光型号
第5楼
机器 等(deng) 21 人赞同该(gai)回答

机(ji)(ji)器人(ren)(ren)自动抛光系统由一(yi)台工业机(ji)(ji)器人(ren)(ren)实现全自动控(kong)制、可重复编辑、能在三维(wei)空间里完成各种抛光作业。机(ji)(ji)器人(ren)(ren)手抓车载承重力50-80KG,臂长1900~2150mm。抛光机(ji)(ji)具有多个可用磨削(xue)接触轮(lun),在磨削(xue)过(guo)程(cheng)中 。

使用孔镜器械
第6楼
神经 等 72 人赞同该(gai)回(hui)答(da)

神(shen)(shen)(shen)经(jing)剥离子可以(yi)用于分(fen)离和(he)(he)鉴(jian)别不同的(de)(de)神(shen)(shen)(shen)经(jing)纤(xian)维(wei)和(he)(he)神(shen)(shen)(shen)经(jing)元(yuan),以(yi)更好地理解(jie)它(ta)们之间的(de)(de)交流机制(zhi)。通过使用神(shen)(shen)(shen)经(jing)剥离子,医(yi)生可以(yi)更准确(que)地识别和(he)(he)评估神(shen)(shen)(shen)经(jing)纤(xian)维(wei)和(he)(he)神(shen)(shen)(shen)经(jing)元(yuan)的(de)(de)功(gong)能和(he)(he)特性(xing),从而更好地了(le)解(jie)神(shen)(shen)(shen)经(jing)系统的(de)(de)工作原(yuan)理和(he)(he)机制(zhi)。 。

金华原代细胞分离试剂盒厂家现货
第7楼
原代(dai) 等(deng) 11 人赞(zan)同该回答

原代细(xi)胞(bao)(bao)的(de)获取(qu):1.培养(yang)时间(jian)无论(lun)是酶消化法(fa)还(hai)是组(zu)织块法(fa),取(qu)样(yang)后(hou)培养(yang)时间(jian)较少需要一周(zhou)以上的(de)时间(jian),期间(jian)可换液(ye)或(huo)者传代。2.换液(ye)时间(jian)无论(lun)酶消化法(fa)还(hai)是组(zu)织块法(fa),在培养(yang)期间(jian)需要随(sui)时关注细(xi)胞(bao)(bao)的(de)生长状况,需观察其是 。

智能家居ESP32
第8楼
WT 等 74 人赞同该回答

WT32-S3-WROVER,AIoT领域的先锋之选。ESP32-S3芯片的加持(chi)下,模(mo)组提供(gong)出(chu)色的神经网络运算能力和信号处(chu)理(li)能力,满足(zu)多样化的应用场景。唤醒词检测(ce)和语音(yin)命令识别(bie),人脸检测(ce)和识别(bie),智(zhi)能家 。

上海衬板地脚线搭配
第9楼
实验 等 31 人赞(zan)同(tong)该(gai)回答

实验(yan)室(shi)衬板地(di)(di)脚线具有以(yi)下(xia)特点:适应性强。实验(yan)室(shi)衬板地(di)(di)脚线的适用范围广,可以(yi)用于各种实验(yan)室(shi)和实验(yan)设(she)备(bei)(bei),如化(hua)学实验(yan)室(shi)、生物(wu)(wu)实验(yan)室(shi)、物(wu)(wu)理实验(yan)室(shi)等(deng)。同时,地(di)(di)脚线还可以(yi)用于各种实验(yan)台、通(tong)风柜、药品柜等(deng)设(she)备(bei)(bei)的底部 。

江汉区小型电机维修调试
第10楼
电(dian)机 等 87 人赞(zan)同该回答

电(dian)机(ji)(ji)维修的专(zhuan)业性主要(yao)(yao)体现在以(yi)下几个方面:理论知(zhi)识:电(dian)机(ji)(ji)维修人员(yuan)需要(yao)(yao)掌(zhang)握电(dian)机(ji)(ji)的基本原(yuan)理、结构、性能特点(dian)、使用要(yao)(yao)求(qiu)等理论知(zhi)识,以(yi)便更好地理解(jie)(jie)和解(jie)(jie)决(jue)电(dian)机(ji)(ji)故障(zhang)。实(shi)践技(ji)能:电(dian)机(ji)(ji)维修人员(yuan)需要(yao)(yao)具备熟练(lian)的实(shi)践技(ji)能,包 。

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