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02“造纸术”蔡伦
2024年12月06日，前叁位分别是法布雷加斯（2008）、大卫-席尔瓦（2012）、奥尔莫（2021）。
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4、容大感光发布业绩预告预计上半年实现净利润4096.18万元-4716.82万元同比增长98.00%-128.00%
《梦想城》：职场奋斗，梦想启航从赵氏孤儿到抗剧女王，从无人问津到各大平台疯抢，赵丽颖用实力打脸了内娱。
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PCBA加(Jia)工(Gong)厂(Chang)解(Jie)析(Xi)pcb与(Yu)pcba的(De)不(Bu)同(Tong)点(Dian)和(He)相(Xiang)关(Guan)性(Xing)2021-05-08 17:51·领(Ling)卓(Zhuo)SMT打(Da)样(Yang)PCBA加(Jia)工(Gong)厂(Chang)解(Jie)析(Xi)pcb与(Yu)pcba的(De)不(Bu)同(Tong)点(Dian)和(He)相(Xiang)关(Guan)性(Xing),如(Ru)果(Guo)您(Nin)正(Zheng)在(Zai)使(Shi)用(Yong)电(Dian)子(Zi)产(Chan)品(Pin)，您(Nin)可(Ke)能(Neng)听(Ting)说(Shuo)过(Guo)印(Yin)刷(Shua)电(Dian)路(Lu)板(Ban)（PCB）和(He)印(Yin)刷(Shua)电(Dian)路(Lu)板(Ban)组(Zu)件(Jian)（PCBA）这(Zhe)两(Liang)个(Ge)术(Shu)语(Yu)。虽(Sui)然(Ran)有(You)些(Xie)人(Ren)可(Ke)以(Yi)互(Hu)换(Huan)地(Di)使(Shi)用(Yong)这(Zhe)些(Xie)术(Shu)语(Yu)，但(Dan)它(Ta)们(Men)并(Bing)不(Bu)一(Yi)定(Ding)意(Yi)味(Wei)着(Zhuo)同(Tong)样(Yang)的(De)事(Shi)情(Qing)。那(Na)它(Ta)们(Men)是(Shi)什(Shi)么(Me)？PCB和(He)PCBA的(De)区(Qu)别(Bie)？PCB是(Shi)机(Ji)械(Xie)基(Ji)础(Chu)，其(Qi)中(Zhong)可(Ke)以(Yi)安(An)装(Zhuang)电(Dian)子(Zi)元(Yuan)件(Jian)以(Yi)完(Wan)成(Cheng)预(Yu)期(Qi)的(De)电(Dian)路(Lu)。PCB本(Ben)身(Shen)包(Bao)含(Han)导(Dao)电(Dian)图(Tu)案(An)或(Huo)迹(Ji)线(Xian)，以(Yi)及(Ji)通(Tong)常(Chang)由(You)玻(Bo)璃(Li)环(Huan)氧(Yang)树(Shu)脂(Zhi)材(Cai)料(Liao)制(Zhi)成(Cheng)的(De)基(Ji)板(Ban)。例(Li)如(Ru)，基(Ji)本(Ben)PCB可(Ke)以(Yi)分(Fen)为(Wei)4,6或(Huo)8个(Ge)信(Xin)号(Hao)层(Ceng)，其(Qi)中(Zhong)最(Zui)常(Chang)见(Jian)的(De)是(Shi)4层(Ceng)和(He)6层(Ceng)PCB。顾(Gu)名(Ming)思(Si)义(Yi)，PCB图(Tu)案(An)由(You)印(Yin)刷(Shua)元(Yuan)件(Jian)，印(Yin)刷(Shua)电(Dian)路(Lu)或(Huo)两(Liang)者(Zhe)的(De)组(Zu)合(He)制(Zhi)成(Cheng)。根(Gen)据(Ju)预(Yu)定(Ding)设(She)计(Ji)将(Jiang)导(Dao)电(Dian)图(Tu)案(An)印(Yin)刷(Shua)或(Huo)刻(Ke)在(Zai)绝(Jue)缘(Yuan)环(Huan)氧(Yang)树(Shu)脂(Zhi)玻(Bo)璃(Li)上(Shang)。如(Ru)何(He)使(Shi)用(Yong)PCB？PCB可(Ke)以(Yi)定(Ding)制(Zhi)用(Yong)于(Yu)电(Dian)子(Zi)设(She)备(Bei)，如(Ru)电(Dian)视(Shi)和(He)收(Shou)音(Yin)机(Ji)，手(Shou)机(Ji)，照(Zhao)相(Xiang)机(Ji)以(Yi)及(Ji)主(Zhu)板(Ban)和(He)显(Xian)卡(Ka)等(Deng)计(Ji)算(Suan)机(Ji)部(Bu)件(Jian)。PCB还(Huan)用(Yong)于(Yu)制(Zhi)造(Zao)照(Zhao)明(Ming)设(She)备(Bei)，医(Yi)疗(Liao)设(She)备(Bei)，汽(Qi)车(Che)工(Gong)业(Ye)和(He)大(Da)多(Duo)数(Shu)工(Gong)业(Ye)机(Ji)械(Xie)。PCB是(Shi)设(She)备(Bei)中(Zhong)必(Bi)不(Bu)可(Ke)少(Shao)的(De)结(Jie)构(Gou)，因(Yin)为(Wei)它(Ta)支(Zhi)持(Chi)电(Dian)子(Zi)元(Yuan)件(Jian)并(Bing)用(Yong)作(Zuo)元(Yuan)件(Jian)的(De)电(Dian)气(Qi)连(Lian)接(Jie)。PCB的(De)独(Du)特(Te)功(Gong)能(Neng)可(Ke)归(Gui)纳(Na)如(Ru)下(Xia)：高(Gao)密(Mi)度(Du)布(Bu)线(Xian)，重(Zhong)量(Liang)轻(Qing)，体(Ti)积(Ji)小(Xiao)，非(Fei)常(Chang)适(Shi)合(He)所(Suo)讨(Tao)论(Lun)的(De)电(Dian)子(Zi)设(She)备(Bei)的(De)小(Xiao)型(Xing)化(Hua)由(You)于(Yu)图(Tu)形(Xing)一(Yi)致(Zhi)性(Xing)和(He)可(Ke)重(Zhong)复(Fu)性(Xing)，PBC可(Ke)以(Yi)节(Jie)省(Sheng)设(She)备(Bei)的(De)维(Wei)护(Hu)，调(Diao)试(Shi)和(He)检(Jian)查(Cha)时(Shi)间(Jian)。它(Ta)的(De)生(Sheng)产(Chan)可(Ke)以(Yi)自(Zi)动(Dong)化(Hua)，以(Yi)降(Jiang)低(Di)电(Dian)子(Zi)设(She)备(Bei)的(De)成(Cheng)本(Ben)。PCB的(De)类(Lei)型(Xing),多(Duo)氯(Lv)联(Lian)苯(Ben)的(De)形(Xing)式(Shi)如(Ru)下(Xia)：一(Yi)、单(Dan)层(Ceng)PCB;也(Ye)称(Cheng)为(Wei)单(Dan)面(Mian)PCB，这(Zhe)是(Shi)大(Da)多(Duo)数(Shu)电(Dian)子(Zi)设(She)备(Bei)中(Zhong)最(Zui)简(Jian)单(Dan)和(He)最(Zui)常(Chang)用(Yong)的(De)PCB，因(Yin)为(Wei)它(Ta)易(Yi)于(Yu)设(She)计(Ji)和(He)生(Sheng)产(Chan)。单(Dan)层(Ceng)PCB涂(Tu)有(You)一(Yi)层(Ceng)导(Dao)电(Dian)材(Cai)料(Liao)，通(Tong)常(Chang)是(Shi)铜(Tong)。一(Yi)层(Ceng)焊(Han)接(Jie)掩(Yan)模(Mo)用(Yong)于(Yu)保(Bao)护(Hu)PCB免(Mian)受(Shou)氧(Yang)化(Hua)。丝(Si)网(Wang)印(Yin)刷(Shua)了(Liao)PCB的(De)组(Zu)件(Jian)。这(Zhe)种(Zhong)类(Lei)型(Xing)的(De)PCB用(Yong)于(Yu)低(Di)成(Cheng)本(Ben)但(Dan)批(Pi)量(Liang)生(Sheng)产(Chan)的(De)应(Ying)用(Yong)，如(Ru)打(Da)印(Yin)机(Ji)，收(Shou)音(Yin)机(Ji)和(He)计(Ji)算(Suan)器(Qi)。二(Er)、双(Shuang)层(Ceng)PCB;这(Zhe)种(Zhong)PCB也(Ye)称(Cheng)为(Wei)双(Shuang)面(Mian)PCB，在(Zai)电(Dian)路(Lu)板(Ban)的(De)顶(Ding)部(Bu)和(He)底(Di)部(Bu)都(Du)有(You)一(Yi)层(Ceng)导(Dao)电(Dian)材(Cai)料(Liao)，通(Tong)常(Chang)是(Shi)铜(Tong)。这(Zhe)种(Zhong)PCB相(Xiang)对(Dui)于(Yu)其(Qi)单(Dan)面(Mian)对(Dui)应(Ying)物(Wu)的(De)主(Zhu)要(Yao)优(You)点(Dian)是(Shi)增(Zeng)强(Qiang)了(Liao)灵(Ling)活(Huo)性(Xing)并(Bing)减(Jian)小(Xiao)了(Liao)尺(Chi)寸(Cun)，使(Shi)其(Qi)电(Dian)路(Lu)紧(Jin)凑(Cou)。它(Ta)通(Tong)常(Chang)用(Yong)于(Yu)工(Gong)业(Ye)控(Kong)制(Zhi)，UPS系(Xi)统(Tong)，转(Zhuan)换(Huan)器(Qi)，电(Dian)话(Hua)，电(Dian)力(Li)监(Jian)控(Kong)单(Dan)元(Yuan)，放(Fang)大(Da)器(Qi)和(He)HVAC应(Ying)用(Yong)。三(San)、多(Duo)层(Ceng)PCB;这(Zhe)种(Zhong)类(Lei)型(Xing)的(De)PCB带(Dai)有(You)两(Liang)个(Ge)以(Yi)上(Shang)的(De)铜(Tong)导(Dao)电(Dian)层(Ceng)。通(Tong)过(Guo)在(Zai)绝(Jue)缘(Yuan)层(Ceng)之(Zhi)间(Jian)夹(Jia)入(Ru)胶(Jiao)水(Shui)来(Lai)固(Gu)定(Ding)电(Dian)路(Lu)板(Ban)，以(Yi)确(Que)保(Bao)电(Dian)路(Lu)不(Bu)会(Hui)因(Yin)过(Guo)热(Re)而(Er)损(Sun)坏(Huai)。它(Ta)用(Yong)于(Yu)复(Fu)杂(Za)的(De)应(Ying)用(Yong)，如(Ru)卫(Wei)星(Xing)系(Xi)统(Tong)，GPS技(Ji)术(Shu)，文(Wen)件(Jian)服(Fu)务(Wu)器(Qi)，数(Shu)据(Ju)存(Cun)储(Chu)设(She)备(Bei)和(He)医(Yi)疗(Liao)设(She)备(Bei)。其(Qi)他(Ta)类(Lei)型(Xing)的(De)PCB包(Bao)括(Kuo)柔(Rou)性(Xing)PCB，刚(Gang)性(Xing)PCB和(He)柔(Rou)性(Xing)刚(Gang)性(Xing)PCB。PCBA - 印(Yin)刷(Shua)电(Dian)路(Lu)板(Ban)组(Zu)件(Jian),印(Yin)刷(Shua)电(Dian)路(Lu)板(Ban)+组(Zu)件(Jian)的(De)缩(Suo)写(Xie)，PCBA是(Shi)通(Tong)过(Guo)镀(Du)通(Tong)孔(Kong)（PTH）和(He)表(Biao)面(Mian)安(An)装(Zhuang)技(Ji)术(Shu)（SMT）工(Gong)艺(Yi)使(Shi)未(Wei)填(Tian)充(Chong)的(De)PCB板(Ban)通(Tong)过(Guo)的(De)整(Zheng)个(Ge)过(Guo)程(Cheng)。这(Zhe)些(Xie)工(Gong)艺(Yi)可(Ke)以(Yi)将(Jiang)所(Suo)有(You)电(Dian)子(Zi)元(Yuan)件(Jian)放(Fang)置(Zhi)并(Bing)焊(Han)接(Jie)到(Dao)空(Kong)白(Bai)PCB板(Ban)上(Shang)，包(Bao)括(Kuo)焊(Han)膏(Gao)印(Yin)刷(Shua)，元(Yuan)件(Jian)贴(Tie)装(Zhuang)，手(Shou)工(Gong)，波(Bo)峰(Feng)焊(Han)或(Huo)回(Hui)流(Liu)焊(Han)以(Yi)及(Ji)各(Ge)种(Zhong)形(Xing)式(Shi)的(De)QC检(Jian)查(Cha)。PCBA的(De)组(Zu)成(Cheng)部(Bu)分(Fen),在(Zai)组(Zu)装(Zhuang)过(Guo)程(Cheng)中(Zhong)，空(Kong)的(De)PCB板(Ban)填(Tian)充(Chong)或(Huo)填(Tian)充(Chong)有(You)电(Dian)子(Zi)元(Yuan)件(Jian)，以(Yi)形(Xing)成(Cheng)功(Gong)能(Neng)性(Xing)印(Yin)刷(Shua)电(Dian)路(Lu)组(Zu)件(Jian)（PCA）或(Huo)PCBA。使(Shi)用(Yong)通(Tong)孔(Kong)技(Ji)术(Shu)，电(Dian)子(Zi)元(Yuan)件(Jian)安(An)装(Zhuang)在(Zai)由(You)导(Dao)电(Dian)垫(Dian)包(Bao)围(Wei)的(De)孔(Kong)中(Zhong)。使(Shi)用(Yong)SMT，将(Jiang)元(Yuan)件(Jian)放(Fang)置(Zhi)在(Zai)PCB上(Shang)，以(Yi)确(Que)保(Bao)引(Yin)脚(Jiao)与(Yu)导(Dao)电(Dian)焊(Han)盘(Pan)对(Dui)齐(Qi)。当(Dang)电(Dian)子(Zi)元(Yuan)件(Jian)固(Gu)定(Ding)在(Zai)电(Dian)路(Lu)板(Ban)的(De)任(Ren)一(Yi)侧(Ce)时(Shi)，电(Dian)路(Lu)板(Ban)一(Yi)侧(Ce)的(De)元(Yuan)件(Jian)必(Bi)须(Xu)在(Zai)焊(Han)接(Jie)前(Qian)通(Tong)过(Guo)胶(Jiao)水(Shui)粘(Zhan)在(Zai)电(Dian)路(Lu)板(Ban)上(Shang)。可(Ke)以(Yi)使(Shi)用(Yong)以(Yi)下(Xia)方(Fang)法(Fa)之(Zhi)一(Yi)测(Ce)试(Shi)填(Tian)充(Chong)的(De)PCBA板(Ban)：关(Guan)闭(Bi)电(Dian)源(Yuan)后(Hou)，可(Ke)以(Yi)直(Zhi)观(Guan)地(Di)或(Huo)使(Shi)用(Yong)自(Zi)动(Dong)光(Guang)学(Xue)检(Jian)查(Cha)工(Gong)具(Ju)检(Jian)查(Cha)电(Dian)路(Lu)板(Ban)。关(Guan)闭(Bi)电(Dian)源(Yuan)后(Hou)，可(Ke)以(Yi)进(Jin)行(Xing)模(Mo)拟(Ni)签(Qian)名(Ming)分(Fen)析(Xi)。该(Gai)分(Fen)析(Xi)称(Cheng)为(Wei)“断(Duan)电(Dian)测(Ce)试(Shi)”。通(Tong)电(Dian)后(Hou)，进(Jin)行(Xing)在(Zai)线(Xian)测(Ce)试(Shi)最(Zui)后(Hou)，可(Ke)以(Yi)进(Jin)行(Xing)功(Gong)能(Neng)测(Ce)试(Shi)以(Yi)确(Que)定(Ding)PCB是(Shi)否(Fou)正(Zheng)在(Zai)按(An)照(Zhao)设(She)计(Ji)的(De)目(Mu)的(De)进(Jin)行(Xing)。从(Cong)上(Shang)面(Mian)的(De)描(Miao)述(Shu)中(Zhong)，我(Wo)们(Men)可(Ke)以(Yi)确(Que)定(Ding)PCBA是(Shi)指(Zhi)处(Chu)理(Li)流(Liu)程(Cheng)，还(Huan)是(Shi)整(Zheng)个(Ge)电(Dian)路(Lu)板(Ban)，而(Er)PCB指(Zhi)的(De)是(Shi)没(Mei)有(You)电(Dian)子(Zi)元(Yuan)件(Jian)的(De)空(Kong)印(Yin)刷(Shua)电(Dian)路(Lu)板(Ban)。通(Tong)常(Chang)，PCB是(Shi)裸(Luo)板(Ban)，而(Er)PCBA是(Shi)成(Cheng)品(Pin)板(Ban)。SMT贴(Tie)片(Pian),SMT贴(Tie)片(Pian)加(Jia)工(Gong),SMT贴(Tie)片(Pian)工(Gong)厂(Chang),深(Shen)圳(Zhen)SMT贴(Tie)片(Pian),SMT加(Jia)工(Gong),东(Dong)莞(Zuo)SMT贴(Tie)片(Pian),惠(Hui)州(Zhou)SMT贴(Tie)片(Pian),PCB打(Da)样(Yang),PCB电(Dian)路(Lu)板(Ban)设(She)计(Ji),PCB打(Da)样(Yang)厂(Chang)家(Jia),PCB打(Da)样(Yang)价(Jia)格(Ge),PCB小(Xiao)批(Pi)量(Liang)打(Da)样(Yang),PCB多(Duo)层(Ceng)板(Ban)打(Da)样(Yang),深(Shen)圳(Zhen)PCB打(Da)样(Yang),电(Dian)路(Lu)板(Ban)打(Da)样(Yang),线(Xian)路(Lu)板(Ban)打(Da)样(Yang),PCBA加(Jia)工(Gong),PCBA加(Jia)工(Gong)厂(Chang),PCBA报(Bao)价(Jia),领(Ling)卓(Zhuo)打(Da)样(Yang)领(Ling)卓(Zhuo)一(Yi)站(Zhan)式(Shi)PCBA智(Zhi)造(Zao)平(Ping)台(Tai),研(Yan)发(Fa)样(Yang)板(Ban)/小(Xiao)批(Pi)量(Liang)，SMT贴(Tie)片(Pian),PCB打(Da)样(Yang)，DIP焊(Han)接(Jie)加(Jia)工(Gong)，PCB制(Zhi)板(Ban)，电(Dian)子(Zi)元(Yuan)器(Qi)件(Jian)全(Quan)套(Tao)代(Dai)购(Gou)、部(Bu)分(Fen)代(Dai)购(Gou)一(Yi)站(Zhan)式(Shi)PCBA制(Zhi)造(Zao)服(Fu)务(Wu)。友(You)情(Qing)提(Ti)醒(Xing)：各(Ge)信(Xin)息(Xi)的(De)数(Shu)据(Ju)和(He)资(Zi)料(Liao)仅(Jin)供(Gong)参(Can)考(Kao)，欢(Huan)迎(Ying)联(Lian)系(Xi)索(Suo)取(Qu)最(Zui)准(Zhun)确(Que)的(De)资(Zi)料(Liao)，谢(Xie)谢(Xie)!了(Liao)解(Jie)更(Geng)多(Duo)
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