IP“電子組件可接受性標(biāo)準(zhǔn)”授證的IPC培訓(xùn)員CIT培訓(xùn)認(rèn)證課程

1、IPC-A-610DIP“電子組件可接受性標(biāo)準(zhǔn)”授證的IPC培訓(xùn)員CIT培訓(xùn)認(rèn)證課程第2節(jié): 前言、適用文件& 操作 2005, IPC, Bannockburn, IL All rights reserved. For use only in IPC Training Programs leading to Official IPC Certification本節(jié)概要范圍目的特殊設(shè)計(jì)術(shù)語(yǔ)和定義 圖例與插圖檢查方法尺寸的界定放大裝置和照明適用文件IPC文件電子組件的操作 2005, IPC, Bannockburn, IL All rights reserved. For use only i

2、n IPC Training Programs leading to Official IPC Certification本節(jié)目標(biāo)通過(guò)本節(jié)學(xué)習(xí)，使學(xué)員全面了解認(rèn)識(shí) IPC-A-610D 文件、術(shù)語(yǔ)、定義及操作規(guī)程 2005, IPC, Bannockburn, IL All rights reserved. For use only in IPC Training Programs leading to Official IPC Certification1.1 范圍外觀質(zhì)量可接受性要求表述了制造電氣與電子組件的可接受性要求以英文版本為準(zhǔn) 2005, IPC, Bannockburn, IL

3、All rights reserved. For use only in IPC Training Programs leading to Official IPC Certification1.1范圍標(biāo)準(zhǔn)無(wú)意定義制造工藝或返工/修理的依據(jù)或改變用戶的產(chǎn)品 IPC-A-610包括J-STD-001所定義之外的一些標(biāo)準(zhǔn) 相關(guān)文件概要見(jiàn)表1 2005, IPC, Bannockburn, IL All rights reserved. For use only in IPC Training Programs leading to Official IPC Certification1.1范圍 2

4、005, IPC, Bannockburn, IL All rights reserved. For use only in IPC Training Programs leading to Official IPC Certification1.2 目的610D 目檢標(biāo)準(zhǔn)體現(xiàn)了IPC 現(xiàn)行標(biāo)準(zhǔn)和其他規(guī)范要求組件或產(chǎn)品應(yīng)該符合現(xiàn)行IPC 標(biāo)準(zhǔn)如果組件不符合這些文件或其等效要求時(shí)可接受條件需由客戶和供應(yīng)商進(jìn)行確定文字說(shuō)明優(yōu)先于圖片 2005, IPC, Bannockburn, IL All rights reserved. For use only in IPC Training Progra

5、ms leading to Official IPC Certification1.3 特殊設(shè)計(jì) IPC-A-610 無(wú)法囊括所有元器件和產(chǎn)品設(shè)計(jì)的各種組合當(dāng)采用非通用或特殊技術(shù)時(shí)可能須要制訂專(zhuān)門(mén)的驗(yàn)收規(guī)范相似特征本文件可以作為產(chǎn)品可接受條件指引特殊驗(yàn)收條件的開(kāi)發(fā)須有客戶的參與和認(rèn)可3級(jí)產(chǎn)品驗(yàn)收條件必須得到客戶的同意標(biāo)準(zhǔn)應(yīng)該包括對(duì)產(chǎn)品可接受條件的定義應(yīng)該將開(kāi)發(fā)的驗(yàn)收標(biāo)準(zhǔn)提交IPC技術(shù)委員會(huì)以考慮納入新版本 2005, IPC, Bannockburn, IL All rights reserved. For use only in IPC Training Programs leading t

6、o Official IPC Certification1.4 術(shù)語(yǔ)和定義注“*”的術(shù)語(yǔ)引自IPC-T-50“電子電路互連與封裝的術(shù)語(yǔ)和定義”1.4.1 分級(jí)用戶對(duì)組件使用哪級(jí)條件驗(yàn)收負(fù)有最終責(zé)任須要給檢查員提供說(shuō)明產(chǎn)品適用等級(jí)的文件接受和/或拒收的判定必須以相適應(yīng)的文件為依據(jù)，如:合同、圖紙、技術(shù)規(guī)范、標(biāo)準(zhǔn)和參考文件 2005, IPC, Bannockburn, IL All rights reserved. For use only in IPC Training Programs leading to Official IPC Certification1.4.1 分級(jí)1級(jí): 通用類(lèi)電

7、子產(chǎn)品2級(jí): 專(zhuān)用服務(wù)類(lèi)電子產(chǎn)品3級(jí): 高性能類(lèi)電子產(chǎn)品 2005, IPC, Bannockburn, IL All rights reserved. For use only in IPC Training Programs leading to Official IPC Certification1.4.2 驗(yàn)收標(biāo)準(zhǔn)引用IPC-A-610或經(jīng)由合同指定作為驗(yàn)收文件時(shí)，則J-STD-001 ，即“電氣與電子組件的焊接要求”文件不適用，除非另有單獨(dú)和具體的要求發(fā)生沖突時(shí)，按下列優(yōu)先次序執(zhí)行:用戶與制造商協(xié)定并成文的采購(gòu)合同總圖或總裝配圖IPC-A-610D, 如果被引用其他文件 2005,

8、IPC, Bannockburn, IL All rights reserved. For use only in IPC Training Programs leading to Official IPC Certification1.4.2 驗(yàn)收標(biāo)準(zhǔn)用戶有義務(wù)確定驗(yàn)收標(biāo)準(zhǔn)如果沒(méi)有規(guī)定據(jù)體要求，則使用最優(yōu)制造工藝引用 IPC J-STD-001和IPC-A-610或其它相關(guān)文件 必須在采購(gòu)文件中明確優(yōu)先順序四級(jí)驗(yàn)收條件： 目標(biāo)條件可接受條件缺陷條件過(guò)程警示條件本文件要求適用于實(shí)心硬導(dǎo)線/元器件引腳或多股導(dǎo)線 2005, IPC, Bannockburn, IL All rights rese

9、rved. For use only in IPC Training Programs leading to Official IPC Certification1.4.2 驗(yàn)收標(biāo)準(zhǔn)1.4.2.1 目標(biāo)條件指近乎完美或稱之為“優(yōu)選”希望達(dá)到但不是總能實(shí)現(xiàn)對(duì)于保證可靠性并非必要1.4.2.2可接受條件保持組件在運(yùn)行過(guò)程中的完整性和可靠性 2005, IPC, Bannockburn, IL All rights reserved. For use only in IPC Training Programs leading to Official IPC Certification1.4.2.3

10、缺陷條件1.4.2.3缺陷條件不能保證組件的形狀、安裝或功能上的要求需要處置處置可以是返工、維修、報(bào)廢或“照樣使用” 維修或“照樣使用”須取得用戶的認(rèn)可 2005, IPC, Bannockburn, IL All rights reserved. For use only in IPC Training Programs leading to Official IPC Certification1.4.2.4 過(guò)程警示條件指存在一些不符合要求的特征但并不影響產(chǎn)品的形狀、安裝和功能由材料、設(shè)計(jì)、操作或設(shè)備等原因引起 應(yīng)作為過(guò)程控制系統(tǒng)的監(jiān)控對(duì)象 2005, IPC, Bannockburn,

11、IL All rights reserved. For use only in IPC Training Programs leading to Official IPC Certification1.4.2.4過(guò)程警示條件 (續(xù))單一原因的過(guò)程警示項(xiàng)目不需要處置受影響的產(chǎn)品可“照樣使用”過(guò)程控制方法常常被應(yīng)用于制造工藝的計(jì)劃、實(shí)施及評(píng)估中制造商須要保留現(xiàn)行工藝控制和持續(xù)改進(jìn)計(jì)劃的客觀證據(jù)以供審查 2005, IPC, Bannockburn, IL All rights reserved. For use only in IPC Training Programs leading to Of

12、ficial IPC Certification1.4.2.5 綜合情況必須考慮累積情況制造商應(yīng)該警惕綜合和累積情況以及其影響產(chǎn)品性能的可能性可接受性條件是個(gè)別定義的，單一性考慮其對(duì)產(chǎn)品可靠運(yùn)行的影響而制定在一些關(guān)聯(lián)條件會(huì)疊加的場(chǎng)合，對(duì)產(chǎn)品性能的累積影響可能是巨大的制造商有責(zé)任鑒別這些情況 2005, IPC, Bannockburn, IL All rights reserved. For use only in IPC Training Programs leading to Official IPC Certification1.4.2.6 未涉及的情況未明確規(guī)定的情況作為缺陷條件或過(guò)程

13、警示條件 也可作為可接受除條件，除非可以認(rèn)定會(huì)影響用戶規(guī)定的形狀、安裝和功能 2005, IPC, Bannockburn, IL All rights reserved. For use only in IPC Training Programs leading to Official IPC Certification1.4.3 板面方向1.4.3.1 *主面通常為最復(fù)雜或元器件最多的一面1.4.3.2 *輔面與主面相對(duì)的面1.4.3.3 焊料起始面施加焊料的面1.4.3.4 焊料終止面指印制電路板焊錫流向的面 2005, IPC, Bannockburn, IL All rights r

14、eserved. For use only in IPC Training Programs leading to Official IPC Certification1.4.4 *冷焊連接一種呈現(xiàn)出很差的潤(rùn)濕性和表面出現(xiàn)灰暗色、疏松的焊點(diǎn)其原因:焊料中雜質(zhì)過(guò)多焊前清潔度差焊接過(guò)程中的加熱不足 2005, IPC, Bannockburn, IL All rights reserved. For use only in IPC Training Programs leading to Official IPC Certification1.4.5 電氣間隙未絕緣的非共接導(dǎo)體間的最小間距絕緣材料

15、須要提供足夠的電氣隔離不知道所用的設(shè)計(jì)標(biāo)準(zhǔn)時(shí)使用附錄A任何違反最小電氣間隙的情況均視為缺陷（作了歸納性的敘述） 2005, IPC, Bannockburn, IL All rights reserved. For use only in IPC Training Programs leading to Official IPC Certification通用術(shù)語(yǔ)和定義1.4.6 高壓具體數(shù)值因設(shè)計(jì)和應(yīng)用而異本文件中的高壓標(biāo)準(zhǔn)僅當(dāng)如此要求時(shí)適用1.4.7 侵入焊（通孔回流）這種工藝使用膜板或注射器將焊膏分配到安裝通孔元件的地方，在回流焊過(guò)程中與其他表面安裝元件一起焊接1.4.8 *浸析在焊接過(guò)

16、程中基底金屬或涂覆層的損失或被除去1.4.9 彎月形涂層（元件）引線上的密封劑或塑封體涂層從元件體密封面突出的部分1.4.10 針插焊膏見(jiàn)侵入焊1.4.11 線徑指導(dǎo)體加絕緣皮的總直徑 2005, IPC, Bannockburn, IL All rights reserved. For use only in IPC Training Programs leading to Official IPC Certification1.5 圖例與插圖為表述分級(jí)依據(jù)，本文引用的大部分圖例(插圖)都做了一定程度的夸張1級(jí)缺陷自動(dòng)成為2、3級(jí)缺陷 2級(jí)缺陷自動(dòng)成為3級(jí)缺陷 2005, IPC, Bann

17、ockburn, IL All rights reserved. For use only in IPC Training Programs leading to Official IPC Certification1.6 檢查方法接收和/或拒收的判定是依據(jù)相關(guān)的適用文件合同圖紙技術(shù)規(guī)范參考文件檢驗(yàn)員不可自行選擇組件驗(yàn)收等級(jí)自動(dòng)檢測(cè)技術(shù)(AIT) 是替代目視檢查的有效方法之一，也是自動(dòng)檢測(cè)設(shè)備的補(bǔ)充手段如果用戶期望采用對(duì)驗(yàn)收頻率有規(guī)定的行業(yè)標(biāo)準(zhǔn)和規(guī)范時(shí)推薦使用J-STD-001文件 2005, IPC, Bannockburn, IL All rights reserved. For use

18、only in IPC Training Programs leading to Official IPC Certification1.7 尺寸界定IPC-A-610D 中，除用于仲裁目的，不需要對(duì)檢查項(xiàng)目進(jìn)行測(cè)量尺寸 用國(guó)際單位（SI）表示，同時(shí)在括號(hào)里標(biāo)注相應(yīng)的英制尺寸 2005, IPC, Bannockburn, IL All rights reserved. For use only in IPC Training Programs leading to Official IPC Certification1.8 放大裝置和照明放大裝置的公差是所選用放大倍數(shù)的 15% 放大裝置須與

19、被測(cè)物體相匹配照明必須足以看清被測(cè)物體表1-2和表1-3的放大倍數(shù)是由被測(cè)物體尺寸決定的只有在確認(rèn)拒收條件時(shí)，才使用仲裁放大倍數(shù)組件上各元器件焊盤(pán)寬度大小不一致時(shí)，可選用較大倍數(shù)的放大裝置檢測(cè) 2005, IPC, Bannockburn, IL All rights reserved. For use only in IPC Training Programs leading to Official IPC Certification表 1-2 檢測(cè)放大倍數(shù)（焊盤(pán)寬度） 2005, IPC, Bannockburn, IL All rights reserved. For use only

20、in IPC Training Programs leading to Official IPC Certification表 1-3 其它放大裝置的應(yīng)用 2005, IPC, Bannockburn, IL All rights reserved. For use only in IPC Training Programs leading to Official IPC Certification2適用文件與電子組件可接受條件相關(guān)連的文件： IPC文件 聯(lián)合工業(yè)文件EOS/ESD 協(xié)會(huì)文件電子工業(yè)聯(lián)合會(huì)文件國(guó)際電工委員會(huì)文件（IEC) 2005, IPC, Bannockburn, IL A

21、ll rights reserved. For use only in IPC Training Programs leading to Official IPC Certification3.1 EOS/ESD 防護(hù)靜電釋放 (ESD)靜電源產(chǎn)生的電位差使電荷從一個(gè)物體快速傳向另一個(gè)物體的現(xiàn)象電氣過(guò)載 (EOS)內(nèi)在原因產(chǎn)生的電能意外施加而導(dǎo)致元件損傷靜電敏感元件 (ESDS)容易受高電能放電影響的元件 2005, IPC, Bannockburn, IL All rights reserved. For use only in IPC Training Programs leading t

22、o Official IPC Certification3.1 EOS/ESD防護(hù)不正確的操作和處理ESDS 元件失效可分為即時(shí)或延時(shí)兩種對(duì)ESDS 元件進(jìn)行保護(hù)性電路設(shè)計(jì)和包裝是很重要的 更多資料：IPC J-STD-001, ANSI/ESD-S-20.20 和其他相關(guān)文件 2005, IPC, Bannockburn, IL All rights reserved. For use only in IPC Training Programs leading to Official IPC Certification3.1.1 EOS/ESD防護(hù) 電氣過(guò)載 (EOS)電氣元件損害來(lái)源于意外

23、電能(如:電脈沖) )某些器件較其它器件更為敏感易遭損害敏感度高低是由設(shè)計(jì)時(shí)確定的時(shí)刻關(guān)注組件中最敏感元件的敏感度 2005, IPC, Bannockburn, IL All rights reserved. For use only in IPC Training Programs leading to Official IPC Certification3.1.1 EOS/ESD防護(hù) 電氣過(guò)載 (EOS)電氣元件損傷 (續(xù))工具和設(shè)備須經(jīng)過(guò)測(cè)試 小于0.5伏的電壓和尖峰是可接受的烙鐵、吸錫器、測(cè)試儀器和其它設(shè)備不能產(chǎn)生大于0.3伏的尖峰電壓 ESD 指標(biāo)定期測(cè)試可能提供保障對(duì)設(shè)備進(jìn)行維護(hù)

24、保養(yǎng)是必要的EOS損傷其本質(zhì)與ESD損傷相似 2005, IPC, Bannockburn, IL All rights reserved. For use only in IPC Training Programs leading to Official IPC Certification3.1.2 EOS/ESD防護(hù)靜電釋放 (ESD)預(yù)防靜電的產(chǎn)生和消除產(chǎn)生的靜電相結(jié)合是由靜電積聚而成的電能所導(dǎo)致靜電的強(qiáng)度取決于靜電源的特性產(chǎn)生靜電能需要物體的相對(duì)運(yùn)動(dòng) 2005, IPC, Bannockburn, IL All rights reserved. For use only in IPC

25、Training Programs leading to Official IPC Certification3.1.2 EOS/ESD防護(hù)靜電釋放 (ESD) 2005, IPC, Bannockburn, IL All rights reserved. For use only in IPC Training Programs leading to Official IPC Certification3.1.2 EOS/ESD防護(hù)靜電釋放 (ESD) 2005, IPC, Bannockburn, IL All rights reserved. For use only in IPC Tr

26、aining Programs leading to Official IPC Certification3.1.3 EOS/ESD 防護(hù) 警告標(biāo)識(shí)取消了另外2個(gè)不常用符號(hào) 2005, IPC, Bannockburn, IL All rights reserved. For use only in IPC Training Programs leading to Official IPC Certification3.1.4 EOS/ESD 防護(hù) 防護(hù)材料保護(hù)遠(yuǎn)離靜電源傳導(dǎo)性的屏蔽盒、袋或包裝三種類(lèi)型的防護(hù)包裝材料：靜電屏蔽材料：可阻止ESD穿透包裝抗靜電材料：低充電性可用作包裝的中間填充材

27、料靜電消散材料：允許電荷通過(guò)其表面消散包裝顏色：不要被誤導(dǎo)注意：只選用不會(huì)污染組件的包裝和操作材料 2005, IPC, Bannockburn, IL All rights reserved. For use only in IPC Training Programs leading to Official IPC Certification3.2 EOS/ESD 防靜電工作臺(tái) /EPA 2005, IPC, Bannockburn, IL All rights reserved. For use only in IPC Training Programs leading to Offici

28、al IPC Certification3.2 EOS/ESD防靜電工作臺(tái) /EPA保持工作區(qū)域無(wú)靜電源材料定期檢查工作臺(tái)是否符合ESD 防護(hù)要求定期檢查工具和設(shè)備是否符合ESD 防護(hù)要求推薦使用接地保護(hù)器 2005, IPC, Bannockburn, IL All rights reserved. For use only in IPC Training Programs leading to Official IPC Certification3.3.1 操作注意事項(xiàng)-準(zhǔn)則表 3-4 電子組件操作推薦準(zhǔn)則保持工作臺(tái)干凈整潔盡可能減少對(duì)組件的操作次數(shù)使用清潔手套不用裸露的手觸摸可焊表面 不

29、使用含硅樹(shù)脂的護(hù)膚霜或洗手液 2005, IPC, Bannockburn, IL All rights reserved. For use only in IPC Training Programs leading to Official IPC Certification3.3.1操作注意事項(xiàng)-準(zhǔn)則表 3-4 電子組件操作推薦準(zhǔn)則決不可堆放電子組件即使沒(méi)有粘貼ESDS標(biāo)志，也總是假設(shè)它們是ESDS部件遵循適當(dāng)?shù)腅SD慣例和程序除非有合適的防護(hù)包裝，否則決不能運(yùn)送ESDS設(shè)備 2005, IPC, Bannockburn, IL All rights reserved. For use on

30、ly in IPC Training Programs leading to Official IPC Certification3.3.2操作注意事項(xiàng)機(jī)械損傷不正確的操作導(dǎo)致元件和組件的損壞如：破裂、碎裂或斷裂的元件和連接器折彎或斷裂的接線端子嚴(yán)重劃傷的印制板面和焊盤(pán)表面可導(dǎo)致整個(gè)組件及其連接的元件報(bào)廢 2005, IPC, Bannockburn, IL All rights reserved. For use only in IPC Training Programs leading to Official IPC Certification3.3.3操作注意事項(xiàng)污染污染的產(chǎn)生源于疏忽或

31、不良的操作行為典型的污染人體鹽分和油脂及未經(jīng)認(rèn)可的手霜是典型的污染源會(huì)降低可焊性、加重腐蝕及枝晶生長(zhǎng)還會(huì)導(dǎo)致其后涂覆和包封的粘附性問(wèn)題常規(guī)的清潔方法無(wú)法去除所有的污染最好的預(yù)防措施：勤洗手，只接觸板的邊緣部分 戴手套和指套可能產(chǎn)生虛假的防護(hù)感覺(jué)應(yīng)該經(jīng)常丟棄并更換手套或指套慎重選擇和正確使用 2005, IPC, Bannockburn, IL All rights reserved. For use only in IPC Training Programs leading to Official IPC Certification3.3.4操作注意事項(xiàng) 電子組件組件上沒(méi)有ESDS 標(biāo)志仍應(yīng)視

32、作ESDS 組件處理元件和組件需要有適當(dāng)?shù)臉?biāo)志用于識(shí)別敏感組件的標(biāo)志通常標(biāo)在連接器的邊緣上為了防止ESD 和 EOS 產(chǎn)生的損害所有操作、拆封、組裝和測(cè)試都必須在靜電防護(hù)工作臺(tái)上進(jìn)行 2005, IPC, Bannockburn, IL All rights reserved. For use only in IPC Training Programs leading to Official IPC Certification3.3.5 操作注意事項(xiàng) 焊接后的處理 焊接和清洗后仍然需要格外慎重指印很難去除使用手套或其它保護(hù)操作器件在清洗操作中應(yīng)使用ESD全防護(hù)機(jī)械擱架或洗籃 2005, IPC

33、, Bannockburn, IL All rights reserved. For use only in IPC Training Programs leading to Official IPC Certification3.3.6 操作注意事項(xiàng) 手套和指套 圖3-4圖3-5 2005, IPC, Bannockburn, IL All rights reserved. For use only in IPC Training Programs leading to Official IPC Certification復(fù)習(xí)目的范圍特殊設(shè)計(jì)術(shù)語(yǔ)和定義 圖例與插圖檢查方法尺寸的界定放大裝置和

34、照明適用文件電子組件的操作 2005, IPC, Bannockburn, IL All rights reserved. For use only in IPC Training Programs leading to Official IPC Certification復(fù)習(xí)題1.在 IPC- A-610 文件中，若圖片與文字說(shuō)明有出入時(shí)，以 ？為準(zhǔn)。文字說(shuō)明，見(jiàn)第 1-3 頁(yè), 第 1.2段 2005, IPC, Bannockburn, IL All rights reserved. For use only in IPC Training Programs leading to Off

35、icial IPC Certification復(fù)習(xí)題2.IPC定義的哪一級(jí)產(chǎn)品要求持續(xù)地高性能運(yùn)行或嚴(yán)格按照需要的性能指標(biāo)運(yùn)行，不允許故障中斷，一旦需要設(shè)備必須功能正常?A.4級(jí),航空電子產(chǎn)品B.3級(jí),高性能電子產(chǎn)品C.2級(jí),專(zhuān)用服務(wù)電子產(chǎn)品D.1級(jí),通用類(lèi)電子產(chǎn)品B, 見(jiàn)1-3頁(yè), 第1.4.1段 2005, IPC, Bannockburn, IL All rights reserved. For use only in IPC Training Programs leading to Official IPC Certification復(fù)習(xí)題3.哪級(jí)驗(yàn)收條件描述了近乎完美，然而是一種理想

36、情況又不總能達(dá)到的條件?A. PreferredB. GoalC. TargetD. BestC,見(jiàn)1-4頁(yè), 第1.4.2.1段 2005, IPC, Bannockburn, IL All rights reserved. For use only in IPC Training Programs leading to Official IPC Certification復(fù)習(xí)題4. 封裝互連結(jié)構(gòu)上通常包含最復(fù)雜最多數(shù)量元器件的那面，通孔技術(shù)中有時(shí)稱為“焊接終止面”，叫做_。 主面, 見(jiàn)1-4頁(yè), 第1.4.3.1段 2005, IPC, Bannockburn, IL All rights

37、 reserved. For use only in IPC Training Programs leading to Official IPC Certification復(fù)習(xí)題5.封裝互連結(jié)構(gòu)上與主面相對(duì)的面叫做_ 。輔面, 見(jiàn)1-5頁(yè), 第1.4.3.2段 2005, IPC, Bannockburn, IL All rights reserved. For use only in IPC Training Programs leading to Official IPC Certification復(fù)習(xí)題6. 焊盤(pán)尺寸為0.40 mm的焊點(diǎn)所用的最大仲裁放大倍數(shù)為 _。A.40XB.20X

38、C.10XD.4XB, 見(jiàn)1-6頁(yè) 第1.8段, 表 1-2 2005, IPC, Bannockburn, IL All rights reserved. For use only in IPC Training Programs leading to Official IPC Certification復(fù)習(xí)題7. 內(nèi)在原因產(chǎn)生的電能的意外施加導(dǎo)致元件損傷的稱為：A.靜電釋放B.電壓浸析C.電氣過(guò)載D.電磁倒置C, 見(jiàn)3-2頁(yè), 第3.1段 2005, IPC, Bannockburn, IL All rights reserved. For use only in IPC Training

39、 Programs leading to Official IPC Certification復(fù)習(xí)題8. 為了防止零部件和組件受到污染，可以在合同中要求使用 手套和指套, 見(jiàn)3-12頁(yè), 第3.3.6 段 2005, IPC, Bannockburn, IL All rights reserved. For use only in IPC Training Programs leading to Official IPC Certification9、靜夜四無(wú)鄰，荒居舊業(yè)貧。9月-229月-22Sunday, September 18, 202210、雨中黃葉樹(shù)，燈下白頭人。21:06:022

40、1:06:0221:069/18/2022 9:06:02 PM11、以我獨(dú)沈久，愧君相見(jiàn)頻。9月-2221:06:0221:06Sep-2218-Sep-2212、故人江海別，幾度隔山川。21:06:0221:06:0221:06Sunday, September 18, 202213、乍見(jiàn)翻疑夢(mèng)，相悲各問(wèn)年。9月-229月-2221:06:0221:06:02September 18, 202214、他鄉(xiāng)生白發(fā)，舊國(guó)見(jiàn)青山。18 九月 20229:06:02 下午21:06:029月-2215、比不了得就不比，得不到的就不要。九月 229:06 下午9月-2221:06September 18, 202216、行動(dòng)出成果，工作出財(cái)富。2022/9/18 21:06:0221: