柳州高阶洛氏硬度计测试标准
洛氏(shi)硬(ying)(ying)(ying)度(du)计(ji)(ji)(ji)的稳(wen)定(ding)(ding)(ding)性(xing)(xing)(xing)(xing)检测(ce):由于硬(ying)(ying)(ying)度(du)计(ji)(ji)(ji)法定(ding)(ding)(ding)计(ji)(ji)(ji)量(liang)(liang)的周期一般是(shi)一年,未发生重大异常时,实(shi)验(yan)室一般不会重新计(ji)(ji)(ji)量(liang)(liang),因(yin)此实(shi)验(yan)室用硬(ying)(ying)(ying)度(du)计(ji)(ji)(ji)的稳(wen)定(ding)(ding)(ding)性(xing)(xing)(xing)(xing)直接(jie)影响着日常检测(ce)结果的正(zheng)确性(xing)(xing)(xing)(xing)。洛氏(shi)硬(ying)(ying)(ying)度(du)计(ji)(ji)(ji)在实(shi)验(yan)室内(nei)部开展硬(ying)(ying)(ying)度(du)计(ji)(ji)(ji)在一定(ding)(ding)(ding)时间内(nei)的稳(wen)定(ding)(ding)(ding)性(xing)(xing)(xing)(xing)研究具有重要(yao)的意义(yi),对(dui)于提高实(shi)验(yan)室的管理水平和工作(zuo)质(zhi)量(liang)(liang)十分重要(yao),尤其对(dui)于实(shi)验(yan)室的检测(ce)人员养成良好的质(zhi)量(liang)(liang)观念和质(zhi)量(liang)(liang)意识、实(shi)验(yan)室提高市场(chang)出名度(du)和开拓检测(ce)市场(chang)十分重要(yao)。稳(wen)定(ding)(ding)(ding)性(xing)(xing)(xing)(xing)是(shi)指测(ce)量(liang)(liang)仪器保持其计(ji)(ji)(ji)量(liang)(liang)特(te)性(xing)(xing)(xing)(xing)随时间恒定(ding)(ding)(ding)的能(neng)力,洛氏(shi)硬(ying)(ying)(ying)度(du)计(ji)(ji)(ji)可以进行定(ding)(ding)(ding)量(liang)(liang)的表征,主要(yao)是(shi)确定(ding)(ding)(ding)计(ji)(ji)(ji)量(liang)(liang)特(te)性(xing)(xing)(xing)(xing)随时间变化的关系。洛氏(shi)硬(ying)(ying)(ying)度(du)计(ji)(ji)(ji)应(ying)用与试样硬(ying)(ying)(ying)度(du)值(zhi)接(jie)近的标准(zhun)硬(ying)(ying)(ying)度(du)块校机,使得试验(yan)结果更为可靠。柳州高阶洛氏(shi)硬(ying)(ying)(ying)度(du)计(ji)(ji)(ji)测(ce)试标准(zhun)
洛(luo)氏硬度计(ji)的(de)(de)维(wei)护(hu):1.检(jian)查工作(zuo)台正面和侧面及卡(ka)具,保证(zheng)没有(you)(you)损坏或外来物(wu)。电器装置应(ying)(ying)(ying)(ying)有(you)(you)良好(hao)(hao)的(de)(de)接地线,以防漏(lou)电伤人。2.硬度计(ji)使用(yong)前(qian),应(ying)(ying)(ying)(ying)按试验要求选择(ze)相应(ying)(ying)(ying)(ying)的(de)(de)压头,将压头用(yong)无(wu)酸汽油清洗后,装入(ru)主轴(zhou)(zhou)衬(chen)套内固定(ding)。固定(ding)时应(ying)(ying)(ying)(ying)保持压头与主轴(zhou)(zhou)同心。3.所有(you)(you)工作(zuo)平(ping)台的(de)(de)基面和支(zhi)撑面应(ying)(ying)(ying)(ying)清洁光(guang)滑,且不应(ying)(ying)(ying)(ying)有(you)(you)麻(ma)坑(keng)、洛(luo)氏硬度计(ji)大划伤和外来物(wu),工作(zuo)平(ping)台应(ying)(ying)(ying)(ying)稳固地安装在丝杠(gang)(gang)上,不应(ying)(ying)(ying)(ying)有(you)(you)晃动。支(zhi)撑面任何可观(guan)察(cha)到(dao)(dao)的(de)(de)压坑(keng)都(dou)会(hui)给薄材试验造成不准(zhun)确的(de)(de)结(jie)果(guo)。工作(zuo)平(ping)台应(ying)(ying)(ying)(ying)稳固地安装在丝杠(gang)(gang)上,不应(ying)(ying)(ying)(ying)有(you)(you)晃动。支(zhi)撑面任何可观(guan)察(cha)到(dao)(dao)的(de)(de)压坑(keng)都(dou)会(hui)给薄材试验造成不准(zhun)确的(de)(de)结(jie)果(guo)。广州金(jin)属淬透性末端淬火(huo)洛(luo)氏硬度计(ji)哪家好(hao)(hao)洛(luo)氏硬度计(ji)可到(dao)(dao)国(guo)家规定(ding)的(de)(de)计(ji)量院做第(di)三(san)方检(jian)测报告。
表(biao)面(mian)(mian)洛(luo)(luo)氏(shi)(shi)(shi)硬(ying)(ying)(ying)(ying)(ying)度(du)(du)(du)试(shi)(shi)(shi)验(yan)采用(yong)(yong)三种试(shi)(shi)(shi)验(yan)力,常用(yong)(yong)两种压头,它(ta)们(men)有6种组合,对应(ying)于表(biao)面(mian)(mian)洛(luo)(luo)氏(shi)(shi)(shi)硬(ying)(ying)(ying)(ying)(ying)度(du)(du)(du)的(de)(de)(de)(de)6个标(biao)尺。表(biao)面(mian)(mian)洛(luo)(luo)氏(shi)(shi)(shi)硬(ying)(ying)(ying)(ying)(ying)度(du)(du)(du)试(shi)(shi)(shi)验(yan)是对洛(luo)(luo)氏(shi)(shi)(shi)硬(ying)(ying)(ying)(ying)(ying)度(du)(du)(du)试(shi)(shi)(shi)验(yan)的(de)(de)(de)(de)一种补(bu)充,在采用(yong)(yong)洛(luo)(luo)氏(shi)(shi)(shi)硬(ying)(ying)(ying)(ying)(ying)度(du)(du)(du)试(shi)(shi)(shi)验(yan)时(shi)(shi),当遇(yu)到材(cai)料较薄,试(shi)(shi)(shi)样(yang)较小(xiao),表(biao)面(mian)(mian)硬(ying)(ying)(ying)(ying)(ying)化层较浅(qian)或测试(shi)(shi)(shi)表(biao)面(mian)(mian)镀覆层时(shi)(shi),就应(ying)改用(yong)(yong)表(biao)面(mian)(mian)洛(luo)(luo)氏(shi)(shi)(shi)硬(ying)(ying)(ying)(ying)(ying)度(du)(du)(du)试(shi)(shi)(shi)验(yan)。这时(shi)(shi)采用(yong)(yong)与洛(luo)(luo)氏(shi)(shi)(shi)硬(ying)(ying)(ying)(ying)(ying)度(du)(du)(du)试(shi)(shi)(shi)验(yan)相同的(de)(de)(de)(de)压头,采用(yong)(yong)只有洛(luo)(luo)氏(shi)(shi)(shi)硬(ying)(ying)(ying)(ying)(ying)度(du)(du)(du)试(shi)(shi)(shi)验(yan)几分之(zhi)一大小(xiao)的(de)(de)(de)(de)试(shi)(shi)(shi)验(yan)力,就可以在上(shang)述试(shi)(shi)(shi)样(yang)上(shang)得到有效的(de)(de)(de)(de)硬(ying)(ying)(ying)(ying)(ying)度(du)(du)(du)试(shi)(shi)(shi)验(yan)结(jie)果(guo)。表(biao)面(mian)(mian)洛(luo)(luo)氏(shi)(shi)(shi)硬(ying)(ying)(ying)(ying)(ying)度(du)(du)(du)的(de)(de)(de)(de)N标(biao)尺适用(yong)(yong)于类似洛(luo)(luo)氏(shi)(shi)(shi)硬(ying)(ying)(ying)(ying)(ying)度(du)(du)(du)的(de)(de)(de)(de)HRC、HRA和HRD测试(shi)(shi)(shi)的(de)(de)(de)(de)材(cai)料;洛(luo)(luo)氏(shi)(shi)(shi)硬(ying)(ying)(ying)(ying)(ying)度(du)(du)(du)计T标(biao)尺适用(yong)(yong)于类似洛(luo)(luo)氏(shi)(shi)(shi)硬(ying)(ying)(ying)(ying)(ying)度(du)(du)(du)的(de)(de)(de)(de)HRB、HRF和HRG测试(shi)(shi)(shi)的(de)(de)(de)(de)材(cai)料。
洛(luo)氏(shi)硬(ying)(ying)(ying)(ying)度(du)计的使用(yong)方法(fa)相对简(jian)单(dan),首先需要选择(ze)合适的压(ya)头和负荷(he)大(da)小(xiao),然后将压(ya)头放在(zai)材(cai)(cai)料(liao)(liao)表面上,通过旋转螺(luo)旋装置施加(jia)一定的负荷(he)。负荷(he)施加(jia)后,保(bao)持一定的时间,然后卸载负荷(he),使用(yong)显微镜测(ce)量压(ya)痕的直径(jing)。末端,根据(ju)公式计算出洛(luo)氏(shi)硬(ying)(ying)(ying)(ying)度(du)值(zhi)(zhi)。洛(luo)氏(shi)硬(ying)(ying)(ying)(ying)度(du)计具有(you)测(ce)量简(jian)便、结(jie)果准(zhun)确、重复性(xing)好等优点(dian),因此被广泛应用(yong)于(yu)各个行业。在(zai)金属材(cai)(cai)料(liao)(liao)领域(yu),洛(luo)氏(shi)硬(ying)(ying)(ying)(ying)度(du)计可(ke)以用(yong)来评估材(cai)(cai)料(liao)(liao)的硬(ying)(ying)(ying)(ying)度(du),从(cong)而判断材(cai)(cai)料(liao)(liao)的强度(du)和耐磨性(xing)。在(zai)塑(su)料(liao)(liao)和橡胶领域(yu),洛(luo)氏(shi)硬(ying)(ying)(ying)(ying)度(du)计可(ke)以用(yong)来评估材(cai)(cai)料(liao)(liao)的硬(ying)(ying)(ying)(ying)度(du)和弹性(xing),从(cong)而判断材(cai)(cai)料(liao)(liao)的质量和可(ke)用(yong)性(xing)。洛(luo)氏(shi)硬(ying)(ying)(ying)(ying)度(du)计具有(you)硬(ying)(ying)(ying)(ying)度(du)值(zhi)(zhi)转换功能:可(ke)转换为(wei)维(wei)氏(shi)、布(bu)氏(shi)、洛(luo)氏(shi)、表洛(luo)等。
布氏(shi)(shi)硬(ying)(ying)度(du)(du)(du)试(shi)验的(de)(de)特点是压(ya)(ya)痕较(jiao)大,成品检验有(you)(you)(you)困难,试(shi)验过程比(bi)(bi)洛(luo)氏(shi)(shi)硬(ying)(ying)度(du)(du)(du)试(shi)验复(fu)杂,测(ce)量操(cao)(cao)作(zuo)(zuo)和(he)(he)(he)(he)压(ya)(ya)痕测(ce)量都比(bi)(bi)较(jiao)费时,并(bing)且由于压(ya)(ya)痕边缘的(de)(de)凸起、凹陷或圆滑过渡都会使压(ya)(ya)痕直(zhi)径的(de)(de)测(ce)量产生较(jiao)大误差(cha),因(yin)此要(yao)(yao)求操(cao)(cao)作(zuo)(zuo)者具有(you)(you)(you)熟练(lian)的(de)(de)试(shi)验技术(shu)和(he)(he)(he)(he)丰富经验,一般要(yao)(yao)求由专门的(de)(de)实验员操(cao)(cao)作(zuo)(zuo)。硬(ying)(ying)度(du)(du)(du)表示材(cai)料抵抗硬(ying)(ying)物(wu)体(ti)压(ya)(ya)入其表面的(de)(de)能力(li)。它是金(jin)属材(cai)料的(de)(de)重要(yao)(yao)性能指标(biao)(biao)之(zhi)一。一般硬(ying)(ying)度(du)(du)(du)越(yue)高(gao),耐磨性越(yue)好。常用的(de)(de)硬(ying)(ying)度(du)(du)(du)指标(biao)(biao)有(you)(you)(you)布氏(shi)(shi)硬(ying)(ying)度(du)(du)(du)、洛(luo)氏(shi)(shi)硬(ying)(ying)度(du)(du)(du)和(he)(he)(he)(he)维氏(shi)(shi)硬(ying)(ying)度(du)(du)(du)。金(jin)属材(cai)料的(de)(de)各种硬(ying)(ying)度(du)(du)(du)值(zhi)之(zhi)间(jian),硬(ying)(ying)度(du)(du)(du)值(zhi)与强(qiang)度(du)(du)(du)值(zhi)之(zhi)间(jian)具有(you)(you)(you)近似的(de)(de)相应(ying)关系(xi)。因(yin)为硬(ying)(ying)度(du)(du)(du)值(zhi)是由起始塑性变(bian)形(xing)抗力(li)和(he)(he)(he)(he)继续塑性变(bian)形(xing)抗力(li)决(jue)定的(de)(de),材(cai)料的(de)(de)强(qiang)度(du)(du)(du)越(yue)高(gao),塑性变(bian)形(xing)抗力(li)越(yue)高(gao),洛(luo)氏(shi)(shi)硬(ying)(ying)度(du)(du)(du)计硬(ying)(ying)度(du)(du)(du)值(zhi)也(ye)就(jiu)越(yue)高(gao)。但各种材(cai)料的(de)(de)换算关系(xi)并(bing)不一致。洛(luo)氏(shi)(shi)硬(ying)(ying)度(du)(du)(du)计工作(zuo)(zuo)平台应(ying)稳(wen)固(gu)地安装在(zai)丝杠上(shang),不应(ying)有(you)(you)(you)晃动。郑州(zhou)洛(luo)氏(shi)(shi)硬(ying)(ying)度(du)(du)(du)计哪家好
洛氏(shi)硬度计由于压痕较(jiao)大,一般不用于成品检测。柳州高(gao)阶洛氏(shi)硬度计测试标准(zhun)
全自(zi)(zi)(zi)动(dong)(dong)数显(xian)洛氏(shi)(shi)硬(ying)度(du)(du)(du)计(ji)特点(dian):自(zi)(zi)(zi)动(dong)(dong)升(sheng)降丝杠(gang)、自(zi)(zi)(zi)动(dong)(dong)选择试(shi)(shi)验力、自(zi)(zi)(zi)动(dong)(dong)加(jia)载(zai)初试(shi)(shi)验力、自(zi)(zi)(zi)动(dong)(dong)加(jia)载(zai)主试(shi)(shi)验力,自(zi)(zi)(zi)动(dong)(dong)卸载(zai)、自(zi)(zi)(zi)动(dong)(dong)显(xian)示硬(ying)度(du)(du)(du)值(zhi),操(cao)作(zuo)步骤:一键(jian)式操(cao)作(zuo):按启动(dong)(dong)键(jian),工(gong)作(zuo)台(tai)自(zi)(zi)(zi)动(dong)(dong)上升(sheng),样(yang)品触碰到压头后自(zi)(zi)(zi)动(dong)(dong)加(jia)载(zai),自(zi)(zi)(zi)动(dong)(dong)卸载(zai),自(zi)(zi)(zi)动(dong)(dong)显(xian)示硬(ying)度(du)(du)(du)值(zhi)。(工(gong)作(zuo)台(tai)自(zi)(zi)(zi)动(dong)(dong)升(sheng)降(没(mei)有高度(du)(du)(du)限(xian)制),无需人(ren)工(gong)转动(dong)(dong)丝杆旋轮。)洛氏(shi)(shi)硬(ying)度(du)(du)(du)计(ji)是(shi)依据洛氏(shi)(shi)硬(ying)度(du)(du)(du)试(shi)(shi)验原理设计(ji)的,只需要单侧接触试(shi)(shi)样(yang)便(bian)可(ke)测(ce)(ce)试(shi)(shi)金(jin)属硬(ying)度(du)(du)(du)。现我(wo)国已生产触摸屏控制和数值(zhi)显(xian)示以及(ji)曲线(xian)显(xian)示并自(zi)(zi)(zi)动(dong)(dong)打印测(ce)(ce)试(shi)(shi)数据的洛氏(shi)(shi)硬(ying)度(du)(du)(du)计(ji)。洛氏(shi)(shi)硬(ying)度(du)(du)(du)计(ji)的特点(dian)是(shi)操(cao)作(zuo)简单,测(ce)(ce)量迅速,并可(ke)从百分表或光学投影屏上直接读数。同布氏(shi)(shi)和维氏(shi)(shi)硬(ying)度(du)(du)(du)检测(ce)(ce)法一样(yang),洛氏(shi)(shi)硬(ying)度(du)(du)(du)计(ji)成为三种较常(chang)用的硬(ying)度(du)(du)(du)检测(ce)(ce)法之一。柳州(zhou)高阶洛氏(shi)(shi)硬(ying)度(du)(du)(du)计(ji)测(ce)(ce)试(shi)(shi)标准(zhun)
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Sexton的灌装系(xi)统具有高度可扩(kuo)展性。它可以同(tong)时连接多达4个源物料(liao)进口,支持(chi)多种(zhong)输(shu)出耗(hao)材,包(bao)括2/5mlCellSeal管和50/250/500ml袋(dai),同(tong)时也允许使用可焊接管用于其(qi)他输(shu)出。这种(zhong)多源输(shu) 。
塑(su)(su)料托(tuo)盘(pan)有(you)以(yi)下四(si)种(zhong)成型(xing)(xing)方式(shi)第三(san)种(zhong):真(zhen)空吸(xi)塑(su)(su)成型(xing)(xing)法。真(zhen)空吸(xi)塑(su)(su)成型(xing)(xing)法生产(chan)的塑(su)(su)料托(tuo)盘(pan)也有(you)单面型(xing)(xing)和(he)双面型(xing)(xing)两(liang)种(zhong)。单面型(xing)(xing)吸(xi)塑(su)(su)托(tuo)盘(pan)多用(yong)于小(xiao)电(dian)机(ji)如吸(xi)尘器电(dian)机(ji)、电(dian)动工(gong)具电(dian)机(ji)等(deng)(deng))以(yi)及电(dian)线盘(pan)等(deng)(deng)包装、运输(shu),发展较快,且以(yi)专门 。
FPZ型耐(nai)腐(fu)塑(su)料自吸(xi)泵(beng)--产品(pin)概述FPZ系列(lie)耐(nai)腐(fu)蚀(shi)自吸(xi)泵(beng),采(cai)用(yong)聚偏二氟乙烯(xi)(xi)PVDF)、增(zeng)强(qiang)(qiang)聚丙烯(xi)(xi)(RPP)一次注塑(su)成(cheng)型。机械强(qiang)(qiang)度高(gao),耐(nai)腐(fu)蚀(shi)性能强(qiang)(qiang),自吸(xi)泵(beng)结构上有独具一格的(de)科(ke)学(xue)性,泵(beng)腔内设有吸(xi)液(ye)(ye)室、储(chu)液(ye)(ye) 。
惠(hui)州市三(san)民实业有限(xian)公(gong)(gong)(gong)司,是(shi)一家集电(dian)缆桥架、科研(yan)、生产、销售、服(fu)务(wu)为(wei)一体的企业,公(gong)(gong)(gong)司兼营电(dian)线、电(dian)缆等建(jian)材相关(guan)产品。公(gong)(gong)(gong)司实力(li)雄(xiong)厚,全(quan)国多个大型重点工程项目(mu)指定供应(ying)商(shang),并与多家房地产公(gong)(gong)(gong)司和电(dian)力(li)安装单(dan)位建(jian)立(li)长 。
防(fang)静(jing)(jing)电(dian)(dian)中(zhong)空(kong)板箱是电(dian)(dian)子行业中(zhong)不可或缺的静(jing)(jing)电(dian)(dian)防(fang)护解决(jue)方案之一。采用导电(dian)(dian)性(xing)能出(chu)色(se)的材料制成,有效消散静(jing)(jing)电(dian)(dian)电(dian)(dian)荷,降低静(jing)(jing)电(dian)(dian)积累和静(jing)(jing)电(dian)(dian)放电(dian)(dian)风(feng)险。其专业设计和制造工艺(yi)确保(bao)了箱体(ti)的稳固性(xing)和耐用性(xing),为(wei)静(jing)(jing)电(dian)(dian)敏(min)感产品提供可 。
304是一种通用性的(de)(de)(de)不(bu)锈钢,它用于(yu)制(zhi)作要求良好(hao)综合性能(耐腐蚀和成型性)的(de)(de)(de)设(she)备和机件。304不(bu)锈钢是按照美国ASTM标准生(sheng)产出来的(de)(de)(de)不(bu)锈钢的(de)(de)(de)一个牌号。304相当于(yu)我国的(de)(de)(de)0Cr19Ni9(0Cr18Ni9 。
气(qi)动保温球阀(fa)的(de)(de)维(wei)护保养相(xiang)对简(jian)单,但却(que)是保证阀(fa)门(men)正常(chang)运转和延长使用(yong)寿命的(de)(de)关键。下面我们将详细(xi)介绍气(qi)动保温球阀(fa)的(de)(de)维(wei)护保养要点。密封性能是阀(fa)门(men)的(de)(de)重要性能之一(yi),直(zhi)接影响到阀(fa)门(men)的(de)(de)密封效果和使用(yong)寿命。因此,在日(ri)常(chang) 。
防(fang)(fang)火(huo),要(yao)求桥(qiao)(qiao)架防(fang)(fang)火(huo)的区(qu)段,必须采用钢制(zhi)或不(bu)燃、阻(zu)燃材料。电缆桥(qiao)(qiao)架的接(jie)地,根据(ju)《建筑(zhu)电气工程(cheng)施(shi)工质量(liang)验收规范》GB 50303-2015 )11.1.1强(qiang)制(zhi)性条文),电缆桥(qiao)(qiao)架应可靠接(jie)地,全长超(chao)过30m时 。