天津电动螺丝刀生产厂家
电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)动(dong)(dong)螺(luo)丝刀安全(quan)(quan)防(fang)护措(cuo)施:1、这(zhei)(zhei)类(lei)工具(ju)由(you)(you)安全(quan)(quan)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源供电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)。安全(quan)(quan)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)指导(dao)体之间或(huo)(huo)任何一(yi)(yi)个(ge)导(dao)体与(yu)地(di)之间空载(zai)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)有(you)效值(zhi)不(bu)超过50V。对三相电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源,导(dao)体与(yu)中线之间的(de)空载(zai)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)有(you)效值(zhi)不(bu)超过29V。安全(quan)(quan)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)通常由(you)(you)安全(quan)(quan)隔离(li)变压(ya)(ya)器(qi)或(huo)(huo)具(ju)有(you)单独的(de)绕(rao)组的(de)变流器(qi)供给。Ⅲ类(lei)工具(ju)上不(bu)允许设置保护接地(di)装置。2、无线电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)干(gan)扰(rao)(rao)的(de)抑制:带换(huan)向(xiang)器(qi)的(de)单相串(chuan)激电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)动(dong)(dong)机和直流电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)动(dong)(dong)机会对电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)视机、收音(yin)机产(chan)生严重(zhong)的(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)兹干(gan)扰(rao)(rao),所以电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)动(dong)(dong)螺(luo)丝刀在(zai)(zai)设计(ji)时要考(kao)虑仰制对无线电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)的(de)干(gan)扰(rao)(rao)。主要采用屏蔽(bi)、励兹绕(rao)组对称联接、设置电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)气滤(lv)波(bo)器(qi)、滤(lv)波(bo)器(qi)接成△形等措(cuo)施。必要时,还可在(zai)(zai)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)动(dong)(dong)机电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)枢两(liang)端串(chuan)接小(xiao)(xiao)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)感线圈。调(diao)节电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)动(dong)(dong)螺(luo)丝刀时,一(yi)(yi)定要注(zhu)意个(ge)规律速度起快,力量越小(xiao)(xiao),速度越慢(man)力量越大,这(zhei)(zhei)是能量守(shou)恒(heng)定律。天津电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)动(dong)(dong)螺(luo)丝刀生产(chan)厂家(jia)
电动(dong)(dong)(dong)螺丝(si)(si)(si)刀(dao)(dao)行(xing)业(ye)(ye)(ye)(ye)积极(ji)引(yin)进(jin)技术提(ti)升(sheng)自(zi)身实(shi)力中国的(de)(de)快(kuai)速发(fa)展,对外交(jiao)流的(de)(de)多(duo)方面性。展望电动(dong)(dong)(dong)螺丝(si)(si)(si)刀(dao)(dao)行(xing)业(ye)(ye)(ye)(ye),近(jin)几年也在(zai)快(kuai)速发(fa)展,但是对比国外的(de)(de)相关(guan)(guan)企业(ye)(ye)(ye)(ye)还(hai)是处于(yu)落后的(de)(de)水平。要(yao)让电动(dong)(dong)(dong)螺丝(si)(si)(si)刀(dao)(dao)行(xing)业(ye)(ye)(ye)(ye)迅速发(fa)展,技术是至关(guan)(guan)重要(yao)的(de)(de)。加(jia)上电动(dong)(dong)(dong)螺丝(si)(si)(si)刀(dao)(dao)行(xing)业(ye)(ye)(ye)(ye)的(de)(de)特殊性,是属于(yu)高技术含量的(de)(de)行(xing)业(ye)(ye)(ye)(ye),企业(ye)(ye)(ye)(ye)一定(ding)要(yao)积极(ji)引(yin)进(jin)相关(guan)(guan)技术,提(ti)升(sheng)自(zi)己的(de)(de)实(shi)力。电动(dong)(dong)(dong)螺丝(si)(si)(si)刀(dao)(dao)行(xing)业(ye)(ye)(ye)(ye),属于(yu)先(xian)进(jin)装(zhuang)备制(zhi)(zhi)造(zao)业(ye)(ye)(ye)(ye),并提(ti)升(sheng)服务于(yu)先(xian)进(jin)制(zhi)(zhi)造(zao)业(ye)(ye)(ye)(ye)。电动(dong)(dong)(dong)螺丝(si)(si)(si)刀(dao)(dao)被普遍应(ying)用(yong)于(yu)航天航空、高铁建设、船(chuan)舶制(zhi)(zhi)造(zao)、汽车工(gong)业(ye)(ye)(ye)(ye)等先(xian)进(jin)装(zhuang)备制(zhi)(zhi)造(zao)业(ye)(ye)(ye)(ye)领域以及建筑道路、装(zhuang)饰(shi)装(zhuang)潢、木(mu)业(ye)(ye)(ye)(ye)加(jia)工(gong)、金(jin)属加(jia)工(gong)等生(sheng)产领域。天津(jin)电动(dong)(dong)(dong)螺丝(si)(si)(si)刀(dao)(dao)生(sheng)产厂家电动(dong)(dong)(dong)螺丝(si)(si)(si)刀(dao)(dao)如何(he)挑选?
使用(yong)电(dian)(dian)(dian)(dian)动(dong)(dong)螺(luo)丝刀(dao)(dao)时,要用(yong)手握持电(dian)(dian)(dian)(dian)动(dong)(dong)螺(luo)丝刀(dao)(dao),接通(tong)(tong)电(dian)(dian)(dian)(dian)源,频繁操动(dong)(dong)开关(guan)(guan),使工具频繁起动(dong)(dong),观(guan)察(cha)电(dian)(dian)(dian)(dian)动(dong)(dong)螺(luo)丝刀(dao)(dao)开关(guan)(guan)的(de)(de)(de)(de)通(tong)(tong)断功(gong)能是否可靠。同时观(guan)察(cha)现(xian)场的(de)(de)(de)(de)电(dian)(dian)(dian)(dian)视机(ji)、日光灯是否有(you)异常(chang)(chang)现(xian)象。以便(bian)确认(ren)电(dian)(dian)(dian)(dian)动(dong)(dong)螺(luo)丝刀(dao)(dao)是否装(zhuang)有(you)有(you)效(xiao)的(de)(de)(de)(de)无线电(dian)(dian)(dian)(dian)干(gan)扰抑(yi)制(zhi)器(qi)。电(dian)(dian)(dian)(dian)动(dong)(dong)起子通(tong)(tong)电(dian)(dian)(dian)(dian)运(yun)行(xing)一分钟,运(yun)行(xing)时用(yong)手握持,手应无明显感觉到任何不正常(chang)(chang)的(de)(de)(de)(de)颤动(dong)(dong),观(guan)察(cha)换(huan)向(xiang)火花(hua),其换(huan)向(xiang)火花(hua)不应超(chao)过3/2级(ji),一般(ban)从电(dian)(dian)(dian)(dian)动(dong)(dong)起子的(de)(de)(de)(de)进风口处往里看,在换(huan)向(xiang)器(qi)表面应无明显的(de)(de)(de)(de)弧光。运(yun)行(xing)时,应无不正常(chang)(chang)的(de)(de)(de)(de)噪声。电(dian)(dian)(dian)(dian)动(dong)(dong)螺(luo)丝刀(dao)(dao)作(zuo)为机(ji)械部件,正常(chang)(chang)工作(zuo)离不开电(dian)(dian)(dian)(dian)批电(dian)(dian)(dian)(dian)源,电(dian)(dian)(dian)(dian)批电(dian)(dian)(dian)(dian)源为电(dian)(dian)(dian)(dian)动(dong)(dong)螺(luo)丝刀(dao)(dao)提供能量及相关(guan)(guan)控制(zhi)功(gong)能。带动(dong)(dong)马(ma)达的(de)(de)(de)(de)转动(dong)(dong)。
电(dian)(dian)(dian)(dian)动(dong)螺(luo)丝(si)刀(dao)(dao)头(tou)顶部前(qian)面有一(yi)个轴帽,往前(qian)面揽住就可(ke)以(yi)松掉(diao)了(le)。可(ke)以(yi)用(yong)(yong)大拇(mu)指压下去电(dian)(dian)(dian)(dian)动(dong)螺(luo)丝(si)刀(dao)(dao)的轴帽,促使(shi)卡批头(tou)的钢珠弹回,轴心漏出来。 学会(hui)放下批头(tou)指向跑(pao)位(wei)插到(dao)(dao)底部,松掉(diao)轴帽安裝结束。拉一(yi)拉批头(tou)判(pan)断是(shi)(shi)不(bu)是(shi)(shi)安裝到(dao)(dao)位(wei)。没有问(wen)题后,给(ji)电(dian)(dian)(dian)(dian)动(dong)螺(luo)丝(si)刀(dao)(dao)接(jie)好开关电(dian)(dian)(dian)(dian)源就可(ke)以(yi)工(gong)(gong)作中了(le)。电(dian)(dian)(dian)(dian)动(dong)螺(luo)丝(si)刀(dao)(dao)批头(tou)在智能(neng)化(hua)工(gong)(gong)业(ye)中扮(ban)演者无名小卒的角色,其功效(xiao)(xiao)则是(shi)(shi)工(gong)(gong)业(ye)拼装中不(bu)能(neng)忽视(shi)的专(zhuan)业(ye)工(gong)(gong)具(ju),关键由电(dian)(dian)(dian)(dian)动(dong)螺(luo)丝(si)刀(dao)(dao)/气(qi)动(dong)螺(luo)丝(si)刀(dao)(dao)等驱动(dong)力(li)专(zhuan)业(ye)工(gong)(gong)具(ju)给(ji)予驱动(dong)力(li)开展拼装,将各(ge)种螺(luo)钉卡紧或(huo)松退,以(yi)做到(dao)(dao)提(ti)高(gao)生(sheng)产效(xiao)(xiao)率,提(ti)高(gao)工(gong)(gong)作能(neng)力(li)的较后目地。是(shi)(shi)用(yong)(yong)于拧紧和旋(xuan)松螺(luo)丝(si)螺(luo)帽用(yong)(yong)的电(dian)(dian)(dian)(dian)动(dong)工(gong)(gong)具(ju)。
电(dian)(dian)(dian)动螺(luo)丝刀的(de)马(ma)(ma)达组(zu)成部分:基本部件:电(dian)(dian)(dian)枢(shu)(转子),碳刷座(zuo),马(ma)(ma)达前盖(gai),轴承,磁(ci)铁(tie)(定子),碳刷,马(ma)(ma)达垫片。电(dian)(dian)(dian)枢(shu):电(dian)(dian)(dian)批(pi)较(jiao)重要零件,好(hao)比(bi)”心脏”一样,电(dian)(dian)(dian)枢(shu)的(de)状态将决(jue)定电(dian)(dian)(dian)批(pi)能(neng)不(bu)能(neng)正(zheng)常工(gong)作。电(dian)(dian)(dian)枢(shu)的(de)好(hao)坏:我们可(ke)以(yi)通过测它的(de)直(zhi)流(liu)电(dian)(dian)(dian)阻得知。正(zheng)常情况(kuang)下,电(dian)(dian)(dian)枢(shu)换(huan)向(xiang)器相邻两(liang)极之间(jian)的(de)直(zhi)流(liu)电(dian)(dian)(dian)阻(220V)大15奥姆(mu)左(zuo)右(由于生产厂家的(de)不(bu)同,其数值也不(bu)相同,较(jiao)大的(de)直(zhi)流(liu)电(dian)(dian)(dian)阻超(chao)过20奥姆(mu))。碳刷座(zuo):从外(wai)观(guan)(guan)(guan)上判断(duan)(duan)其有(you)无破(po)损及内(nei)部碳化(hua)(烧黑)。而马(ma)(ma)达前盖(gai):从外(wai)观(guan)(guan)(guan)上判断(duan)(duan)其有(you)破(po)损。定子:从外(wai)观(guan)(guan)(guan)上判断(duan)(duan)其内(nei)部磁(ci)盘有(you)无破(po)损及移位元(导致(zhi)磁(ci)性(xing)不(bu)对称),同时(shi)还可(ke)将一字起(qi)子放入磁(ci)铁(tie)内(nei)部检(jian)验其磁(ci)性(xing)的(de)大小,磁(ci)性(xing)太小时(shi),应(ying)更(geng)换(huan)新磁(ci)铁(tie)。可(ke)调缓冲离(li)合器型电(dian)(dian)(dian)动螺(luo)丝刀:属非(fei)自动切(qie)断(duan)(duan)电(dian)(dian)(dian)源工(gong)具。螺(luo)丝排列(lie)机(ji)厂家供(gong)应(ying)
电(dian)动螺(luo)(luo)(luo)丝刀在(zai)更换(huan)起子(zi)头时,一定要将电(dian)源插头拨离电(dian)源插座,且关闭螺(luo)(luo)(luo)丝刀电(dian)源。天津电(dian)动螺(luo)(luo)(luo)丝刀生产厂家
电(dian)动螺(luo)(luo)(luo)丝(si)(si)(si)刀(dao)(dao)(dao)(dao)要怎么选择?1、看作用(yong)(yong)(yong)(yong):螺(luo)(luo)(luo)丝(si)(si)(si)刀(dao)(dao)(dao)(dao)种类许多,一般是依(yi)据其(qi)(qi)作用(yong)(yong)(yong)(yong)来挑(tiao)选 、区分的,主要有(you)(you)一般螺(luo)(luo)(luo)丝(si)(si)(si)刀(dao)(dao)(dao)(dao)、组(zu)合式螺(luo)(luo)(luo)丝(si)(si)(si)刀(dao)(dao)(dao)(dao)、电(dian)动螺(luo)(luo)(luo)丝(si)(si)(si)刀(dao)(dao)(dao)(dao)、钟表起(qi)子(zi)、小金刚螺(luo)(luo)(luo)丝(si)(si)(si)刀(dao)(dao)(dao)(dao)等,在其(qi)(qi)中一般螺(luo)(luo)(luo)丝(si)(si)(si)刀(dao)(dao)(dao)(dao)合适(shi)家庭用(yong)(yong)(yong)(yong),是头柄(bing)与螺(luo)(luo)(luo)丝(si)(si)(si)批融合的构(gou)(gou)成,其(qi)(qi)螺(luo)(luo)(luo)丝(si)(si)(si)批有(you)(you)各种长短、粗细,组(zu)合式螺(luo)(luo)(luo)丝(si)(si)(si)刀(dao)(dao)(dao)(dao)的批头、柄(bing)是分离的,一个柄(bing)可配(pei)搭好(hao)几个螺(luo)(luo)(luo)丝(si)(si)(si)批应用(yong)(yong)(yong)(yong),钟表起(qi)子(zi)较(jiao)为高精密(mi),合适(shi)维修钟表等。2、看构(gou)(gou)造样子(zi):螺(luo)(luo)(luo)丝(si)(si)(si)刀(dao)(dao)(dao)(dao)关键分成直形(xing)、而(er)言L形(xing)和T形(xing)的,不(bu)一样的样子(zi)合适(shi)拧的螺(luo)(luo)(luo)钉也不(bu)一样,直形(xing)螺(luo)(luo)(luo)丝(si)(si)(si)刀(dao)(dao)(dao)(dao)的头顶(ding)部有(you)(you)一字、十(shi)字、米字、T型、H型等构(gou)(gou)造的,可以扭开相(xiang)匹配(pei)螺(luo)(luo)(luo)钉,而(er)L型螺(luo)(luo)(luo)丝(si)(si)(si)刀(dao)(dao)(dao)(dao)通(tong)常是用(yong)(yong)(yong)(yong)以六角螺(luo)(luo)(luo)丝(si)(si)(si),拥有(you)(you)较(jiao)为长的杆(gan)构(gou)(gou)造,可以扩大扭矩(ju),应用(yong)(yong)(yong)(yong)更(geng)省劲(jing),T型螺(luo)(luo)(luo)丝(si)(si)(si)刀(dao)(dao)(dao)(dao)较(jiao)为特别,是汽车维修领域中专业的。天(tian)津(jin)电(dian)动螺(luo)(luo)(luo)丝(si)(si)(si)刀(dao)(dao)(dao)(dao)生产厂家
本文来自海润达(da)物联科技有限责任公司://qfd1mz.cn/Article/06b05399940.html
西藏全自动光伏组件封(feng)装设备售后服(fu)务
光伏(fu)(fu)组(zu)(zu)件封(feng)(feng)装设备可(ke)(ke)(ke)以通过以下方法提高(gao)(gao)生产(chan)效(xiao)率(lv):自动(dong)化(hua)生产(chan)线(xian):采用(yong)自动(dong)化(hua)设备和机器人(ren)技术可(ke)(ke)(ke)以实现(xian)光伏(fu)(fu)组(zu)(zu)件封(feng)(feng)装的自动(dong)化(hua)生产(chan)。自动(dong)化(hua)生产(chan)线(xian)可(ke)(ke)(ke)以提高(gao)(gao)生产(chan)效(xiao)率(lv),减少人(ren)工操作和人(ren)为错误,提高(gao)(gao)生产(chan)线(xian)的稳定性(xing)和一致(zhi)性(xing) 。
花岗岩床身的作用(yong)原理主要基(ji)于其良好(hao)的热稳(wen)定性和机械(xie)性能(neng)稳(wen)定性。这种材料具有好(hao)的抗振性和热稳(wen)定性,特(te)别适(shi)合精密(mi)磨(mo)削和硬车削领域。花岗岩床身由静压空簧(huang)支承(cheng),能(neng)有效隔离(li)基(ji)础振动对机床的影响。此外,花岗岩床身 。
同时美术培训的(de)老(lao)师还(hai)会(hui)对(dui)学生(sheng)(sheng)进行(xing)定期的(de)沟通和辅(fu)导建立学资(zi)料以(yi)多(duo)方面(mian)了解(jie)学生(sheng)(sheng)的(de)学习情况、生(sheng)(sheng)活动态及时发(fa)现问题并(bing)解(jie)决各种困扰他们的(de)难题让他们全心全意地投入到美术学习中(zhong)以(yi)取得(de)更好的(de)成绩(ji)回(hui)报学校和社会(hui)对(dui)于他们 。
三(san)维动画的(de)(de)制作过程可以说是一门艺术(shu)与技术(shu)的(de)(de)完美结合(he)。从起初的(de)(de)概念设计(ji),到(dao)模型建(jian)立(li)、纹理贴图、灯(deng)光照明,再到(dao)动画的(de)(de)制作和(he)渲染,每一个步骤都需要精确(que)的(de)(de)计(ji)算和(he)精心(xin)的(de)(de)设计(ji)。只有这样,才能让角色(se)、场景、特(te)xia 。
不管(guan)是在市区工作或者在山区旅行(xing),冲锋衣定(ding)(ding)做都可以(yi)为你提供(gong)更具有品(pin)(pin)质(zhi)的(de)(de)(de)运动体验(yan)。陕西南方制衣定(ding)(ding)做的(de)(de)(de)冲锋衣其实用功能性(xing)设计(ji)非常人性(xing)化,可以(yi)更加方便携(xie)带。定(ding)(ding)制的(de)(de)(de)冲锋衣承载(zai)了更多的(de)(de)(de)品(pin)(pin)质(zhi)、感性(xing)和文化内涵,更加富 。
鼓风(feng)曝(pu)气是采用曝(pu)气器(qi)(扩(kuo)散(san)板或扩(kuo)散(san)管)在(zai)水(shui)中引入气泡的曝(pu)气方式(shi)。鼓风(feng)曝(pu)气系(xi)统由鼓风(feng)机、曝(pu)气器(qi)和一(yi)系(xi)列(lie)连通的管线组成。鼓风(feng)机将(jiang)空气通过(guo)(guo)一(yi)系(xi)列(lie)管道输送到(dao)安装在(zai)池底部的曝(pu)气器(qi),通过(guo)(guo)曝(pu)气器(qi),使空气形成不(bu)同尺寸 。
垃圾渗(shen)滤(lv)液(ye)处理(li)问(wen)题在(zai)我国存在(zai)多方(fang)面的(de)原因,包括资金支持、技术(shu)更新、监(jian)(jian)管(guan)严格程度(du)等等。为了解决(jue)这些(xie)问(wen)题,需要(yao)官方(fang)、企(qi)业和专业机构(gou)的(de)共同努力。官方(fang)需要(yao)加大(da)对垃圾渗(shen)滤(lv)液(ye)处理(li)的(de)投入(ru)和监(jian)(jian)管(guan)力度(du),提高(gao)对环保公司的(de) 。
上海(hai)的(de)居住(zhu)证制度乃至居住(zhu)证积(ji)分制度,应该是(shi)(shi)一个进步和(he)改(gai)变(bian)过程中的(de)步骤(zhou),而(er)不是(shi)(shi)的(de)结果(guo)。同时,即便在当(dang)前阶段,哪(na)些(xie)(xie)公共(gong)服(fu)(fu)务(wu)可(ke)以和(he)积(ji)分挂(gua)钩,哪(na)些(xie)(xie)公共(gong)服(fu)(fu)务(wu)不应该和(he)积(ji)分挂(gua)钩,而(er)是(shi)(shi)需要(yao)当(dang)地均等提供,应该有一个明确 。
锅炉(lu)布(bu)(bu)袋(dai)除尘(chen)器采用布(bu)(bu)袋(dai)过滤技(ji)术,相比其他除尘(chen)设备如湿(shi)式除尘(chen)器),能够有效(xiao)降低能耗和(he)水(shui)耗。此(ci)外(wai),它还可以回收和(he)利用一部分颗(ke)粒物,减少固体废物的(de)排放,对环境(jing)更加友好。脉(mai)冲布(bu)(bu)袋(dai)除尘(chen)器是一种常见(jian)的(de)工(gong)业除尘(chen)设备 。
而智能(neng)汽修(xiu)软(ruan)件作(zuo)为数字化转型的(de)重要(yao)工具(ju),具(ju)备了以下(xia)几个(ge)方(fang)面(mian)的(de)优(you)势(shi)。首先,智能(neng)汽修(xiu)软(ruan)件可以实现(xian)信息(xi)(xi)的(de)快速传递和共享。传统(tong)的(de)汽修(xiu)模(mo)式中,信息(xi)(xi)的(de)传递往(wang)(wang)往(wang)(wang)需要(yao)通过(guo)电(dian)话、纸质文件等方(fang)式,效(xiao)率(lv)低下(xia)且(qie)容易出现(xian)误差(cha)。 。
招牌(pai)(pai)(pai)灯(deng)箱(xiang)(xiang)(xiang)的(de)制(zhi)作需(xu)要(yao)考虑易读(du)性。因为(wei)招牌(pai)(pai)(pai)灯(deng)箱(xiang)(xiang)(xiang)是(shi)商(shang)(shang)家展示自己的(de)品(pin)牌(pai)(pai)(pai)和(he)信息的(de)重(zhong)要(yao)方式(shi),如果招牌(pai)(pai)(pai)灯(deng)箱(xiang)(xiang)(xiang)无法清晰地展示商(shang)(shang)家的(de)品(pin)牌(pai)(pai)(pai)和(he)信息,那么就无法达到预(yu)期的(de)宣传(chuan)效果。因此(ci),在制(zhi)作招牌(pai)(pai)(pai)灯(deng)箱(xiang)(xiang)(xiang)时,需(xu)要(yao)考虑字体的(de)大(da)小(xiao)、粗 。