PCB貼片加工物料清單 (BOM) 中包含的7個(gè)最重要的事項(xiàng)
發(fā)布時(shí)間：2021-11-26 17:18 閱讀量：1538
當(dāng)您計(jì)劃從制造商處構(gòu)建印刷電路板 (PCB) 時(shí)，您會(huì)遇到的一件事是物料清單。這也稱為 BOM?，F(xiàn)在，這份材料清單究竟是什么?它包括哪些因素?閱讀本文時(shí)，您是否有這些問題?嗯，這根本不是火箭科...
基本
文件
流程
錯(cuò)誤
SQL
調(diào)試
- 請(qǐng)求信息 : 2024-11-07 13:50:14 HTTP/1.1 GET : http://yourapartments.cn/index/newShow/127/79
- 運(yùn)行時(shí)間 : 0.325630s [ 吞吐率：3.07req/s ] 內(nèi)存消耗：911.28kb 文件加載：156
- 查詢信息 : 113 queries
- 緩存信息 : 1 reads,0 writes
- 會(huì)話信息 : SESSION_ID=b40b3b0ace87bb043e9988d6a0b1ee47
- CONNECT:[ UseTime:0.007352s ] mysql:host=sql.m215.vhostgo.com;port=3306;dbname=huaxingpcb;charset=utf8
- SHOW FULL COLUMNS FROM `language` [ RunTime:0.011196s ]
- SELECT * FROM `language` WHERE `is_default` = '1' LIMIT 1 [ RunTime:0.000545s ]
- SELECT * FROM `language` WHERE `is_default` = '1' AND `mark` = 'cn' LIMIT 1 [ RunTime:0.000583s ]
- SELECT * FROM `language` [ RunTime:0.000504s ]
- SHOW FULL COLUMNS FROM `custom_tag` [ RunTime:0.009266s ]
- SELECT `variate`,`value` FROM `custom_tag` WHERE `custom_tag_id` <> 0 AND `lang` = 'cn' [ RunTime:0.000443s ]
- SHOW FULL COLUMNS FROM `banner` [ RunTime:0.008080s ]
- SELECT * FROM `banner` WHERE FIND_IN_SET('127', `column`) AND `lang` = 'cn' ORDER BY `weigh` DESC [ RunTime:0.000428s ]
- SHOW FULL COLUMNS FROM `webdata` [ RunTime:0.007638s ]
- SELECT * FROM `webdata` WHERE `lang` = 'cn' LIMIT 1 [ RunTime:0.000861s ]
- UPDATE `webdata` SET `view_count` = `view_count` + 1 WHERE `lang` = 'cn' [ RunTime:0.000638s ]
- UPDATE `webdata` SET `pageview` = `pageview` + 1 WHERE `lang` = 'cn' [ RunTime:0.000447s ]
- SHOW FULL COLUMNS FROM `column` [ RunTime:0.007789s ]
- SELECT * FROM `column` WHERE `id` = 127 LIMIT 1 [ RunTime:0.000423s ]
- SELECT * FROM `column` WHERE `id` = 120 LIMIT 1 [ RunTime:0.000509s ]
- SHOW FULL COLUMNS FROM `column_content` [ RunTime:0.008881s ]
- UPDATE `column_content` SET `PV` = `PV` + 1 WHERE `id` = 79 [ RunTime:0.000602s ]
- SELECT * FROM `column_content` WHERE `id` = 79 LIMIT 1 [ RunTime:0.000506s ]
- SHOW FULL COLUMNS FROM `parameter` [ RunTime:0.007288s ]
- SELECT * FROM `parameter` WHERE `column_id` = 127 ORDER BY `weigh` DESC [ RunTime:0.000376s ]
- SELECT * FROM `column_content` WHERE `id` < 79 AND `column_id` = 127 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000575s ]
- SELECT * FROM `column_content` WHERE `id` > 79 AND `column_id` = 127 LIMIT 1 [ RunTime:0.000588s ]
- SELECT * FROM `column` WHERE `pid` = 127 [ RunTime:0.000442s ]
- SELECT * FROM `column_content` WHERE `column_id` = 127 AND `com_ok` = 1 ORDER BY `top_ok` DESC,`com_ok` DESC,`weigh` DESC,`id` ASC LIMIT 3 [ RunTime:0.000628s ]
- SELECT * FROM `column` WHERE `id` = 127 LIMIT 1 [ RunTime:0.000372s ]
- SELECT * FROM `column` WHERE `pid` = 127 [ RunTime:0.000365s ]
- SELECT COUNT(*) AS think_count FROM `column_content` WHERE `column_id` = 127 AND `lang` = 'cn' [ RunTime:0.000483s ]
- SELECT * FROM `column_content` WHERE `column_id` = 127 AND `lang` = 'cn' ORDER BY `top_ok` DESC,`com_ok` DESC,`weigh` DESC,`edittime` DESC LIMIT 0,8 [ RunTime:0.000588s ]
- SHOW FULL COLUMNS FROM `link` [ RunTime:0.007011s ]
- SELECT * FROM `link` ORDER BY `weigh` DESC [ RunTime:0.000415s ]
- SELECT * FROM `column` WHERE `pc_nav` IN (1,3) AND `lang` = 'cn' ORDER BY `weigh` DESC,`id` ASC [ RunTime:0.000424s ]
- SELECT * FROM `column_content` WHERE `column_id` = 134 LIMIT 1 [ RunTime:0.000568s ]
- SELECT * FROM `column_content` WHERE `column_id` = 135 LIMIT 1 [ RunTime:0.000467s ]
- SELECT * FROM `column_content` WHERE `column_id` = 134 LIMIT 1 [ RunTime:0.000347s ]
- SELECT * FROM `column_content` WHERE `column_id` = 135 LIMIT 1 [ RunTime:0.000335s ]
- SELECT * FROM `column_content` WHERE `column_id` = 134 LIMIT 1 [ RunTime:0.000354s ]
- SELECT * FROM `column_content` WHERE `column_id` = 135 LIMIT 1 [ RunTime:0.000335s ]
- SELECT * FROM `column_content` WHERE `column_id` = 134 LIMIT 1 [ RunTime:0.000343s ]
- SELECT * FROM `column_content` WHERE `column_id` = 135 LIMIT 1 [ RunTime:0.000347s ]
- SELECT * FROM `column_content` WHERE `column_id` = 134 LIMIT 1 [ RunTime:0.000393s ]
- SELECT * FROM `column_content` WHERE `column_id` = 135 LIMIT 1 [ RunTime:0.000337s ]
- SELECT * FROM `column_content` WHERE `column_id` = 134 LIMIT 1 [ RunTime:0.000352s ]
- SELECT * FROM `column_content` WHERE `column_id` = 135 LIMIT 1 [ RunTime:0.000404s ]
- SELECT * FROM `column_content` WHERE `column_id` = 134 LIMIT 1 [ RunTime:0.000396s ]
- SELECT * FROM `column_content` WHERE `column_id` = 135 LIMIT 1 [ RunTime:0.000366s ]
- SELECT * FROM `column_content` WHERE `column_id` = 134 LIMIT 1 [ RunTime:0.000413s ]
- SELECT * FROM `column_content` WHERE `column_id` = 135 LIMIT 1 [ RunTime:0.000372s ]
- SELECT * FROM `column_content` WHERE `column_id` = 134 LIMIT 1 [ RunTime:0.000383s ]
- SELECT * FROM `column_content` WHERE `column_id` = 135 LIMIT 1 [ RunTime:0.000377s ]
- SELECT * FROM `column_content` WHERE `column_id` = 134 LIMIT 1 [ RunTime:0.000406s ]
- SELECT * FROM `column_content` WHERE `column_id` = 135 LIMIT 1 [ RunTime:0.000358s ]
- SELECT * FROM `column_content` WHERE `column_id` = 134 LIMIT 1 [ RunTime:0.000370s ]
- SELECT * FROM `column_content` WHERE `column_id` = 135 LIMIT 1 [ RunTime:0.000382s ]
- SELECT * FROM `column_content` WHERE `column_id` = 134 LIMIT 1 [ RunTime:0.000357s ]
- SELECT * FROM `column_content` WHERE `column_id` = 135 LIMIT 1 [ RunTime:0.000350s ]
- SELECT * FROM `column_content` WHERE `column_id` = 134 LIMIT 1 [ RunTime:0.000475s ]
- SELECT * FROM `column_content` WHERE `column_id` = 135 LIMIT 1 [ RunTime:0.000417s ]
- SELECT * FROM `column_content` WHERE `column_id` = 134 LIMIT 1 [ RunTime:0.000395s ]
- SELECT * FROM `column_content` WHERE `column_id` = 135 LIMIT 1 [ RunTime:0.000392s ]
- SELECT * FROM `column_content` WHERE `column_id` = 134 LIMIT 1 [ RunTime:0.000412s ]
- SELECT * FROM `column_content` WHERE `column_id` = 135 LIMIT 1 [ RunTime:0.000381s ]
- SELECT * FROM `column_content` WHERE `column_id` = 134 LIMIT 1 [ RunTime:0.000359s ]
- SELECT * FROM `column_content` WHERE `column_id` = 135 LIMIT 1 [ RunTime:0.000425s ]
- SELECT * FROM `column_content` WHERE `column_id` = 134 LIMIT 1 [ RunTime:0.000359s ]
- SELECT * FROM `column_content` WHERE `column_id` = 135 LIMIT 1 [ RunTime:0.000354s ]
- SELECT * FROM `column_content` WHERE `column_id` = 134 LIMIT 1 [ RunTime:0.000454s ]
- SELECT * FROM `column_content` WHERE `column_id` = 135 LIMIT 1 [ RunTime:0.000456s ]
- SELECT * FROM `column_content` WHERE `column_id` = 134 LIMIT 1 [ RunTime:0.000375s ]
- SELECT * FROM `column_content` WHERE `column_id` = 134 LIMIT 1 [ RunTime:0.000462s ]
- SELECT * FROM `column_content` WHERE `column_id` = 135 LIMIT 1 [ RunTime:0.000393s ]
- SELECT * FROM `column_content` WHERE `column_id` = 135 LIMIT 1 [ RunTime:0.000370s ]
- SELECT * FROM `column` WHERE `pc_nav` IN (2,3) AND `lang` = 'cn' ORDER BY `weigh` DESC,`id` ASC [ RunTime:0.000407s ]
- SELECT * FROM `column_content` WHERE `column_id` = 134 LIMIT 1 [ RunTime:0.000355s ]
- SELECT * FROM `column_content` WHERE `column_id` = 135 LIMIT 1 [ RunTime:0.000341s ]
- SELECT * FROM `column_content` WHERE `column_id` = 134 LIMIT 1 [ RunTime:0.000402s ]
- SELECT * FROM `column_content` WHERE `column_id` = 135 LIMIT 1 [ RunTime:0.000343s ]
- SELECT * FROM `column_content` WHERE `column_id` = 134 LIMIT 1 [ RunTime:0.000374s ]
- SELECT * FROM `column_content` WHERE `column_id` = 135 LIMIT 1 [ RunTime:0.000448s ]
- SELECT * FROM `column_content` WHERE `column_id` = 134 LIMIT 1 [ RunTime:0.000415s ]
- SELECT * FROM `column_content` WHERE `column_id` = 135 LIMIT 1 [ RunTime:0.000422s ]
- SELECT * FROM `column_content` WHERE `column_id` = 134 LIMIT 1 [ RunTime:0.000381s ]
- SELECT * FROM `column_content` WHERE `column_id` = 135 LIMIT 1 [ RunTime:0.000345s ]
- SELECT * FROM `column_content` WHERE `column_id` = 134 LIMIT 1 [ RunTime:0.000372s ]
- SELECT * FROM `column_content` WHERE `column_id` = 135 LIMIT 1 [ RunTime:0.000339s ]
- SELECT * FROM `column_content` WHERE `column_id` = 134 LIMIT 1 [ RunTime:0.000432s ]
- SELECT * FROM `column_content` WHERE `column_id` = 135 LIMIT 1 [ RunTime:0.000400s ]
- SELECT * FROM `column_content` WHERE `column_id` = 134 LIMIT 1 [ RunTime:0.000427s ]
- SELECT * FROM `column_content` WHERE `column_id` = 135 LIMIT 1 [ RunTime:0.000434s ]
- SELECT * FROM `column_content` WHERE `column_id` = 134 LIMIT 1 [ RunTime:0.000491s ]
- SELECT * FROM `column_content` WHERE `column_id` = 135 LIMIT 1 [ RunTime:0.000465s ]
- SELECT * FROM `column_content` WHERE `column_id` = 134 LIMIT 1 [ RunTime:0.000478s ]
- SELECT * FROM `column_content` WHERE `column_id` = 135 LIMIT 1 [ RunTime:0.000419s ]
- SELECT * FROM `column_content` WHERE `column_id` = 134 LIMIT 1 [ RunTime:0.000377s ]
- SELECT * FROM `column_content` WHERE `column_id` = 135 LIMIT 1 [ RunTime:0.000383s ]
- SELECT * FROM `column_content` WHERE `column_id` = 134 LIMIT 1 [ RunTime:0.000462s ]
- SELECT * FROM `column_content` WHERE `column_id` = 135 LIMIT 1 [ RunTime:0.000393s ]
- SELECT * FROM `column_content` WHERE `column_id` = 134 LIMIT 1 [ RunTime:0.000346s ]
- SELECT * FROM `column_content` WHERE `column_id` = 135 LIMIT 1 [ RunTime:0.000368s ]
- SELECT * FROM `column_content` WHERE `column_id` = 134 LIMIT 1 [ RunTime:0.000365s ]
- SELECT * FROM `column_content` WHERE `column_id` = 135 LIMIT 1 [ RunTime:0.000375s ]
- SELECT * FROM `column_content` WHERE `column_id` = 134 LIMIT 1 [ RunTime:0.000447s ]
- SELECT * FROM `column_content` WHERE `column_id` = 135 LIMIT 1 [ RunTime:0.000412s ]
- SELECT * FROM `column_content` WHERE `column_id` = 134 LIMIT 1 [ RunTime:0.000348s ]
- SELECT * FROM `column_content` WHERE `column_id` = 135 LIMIT 1 [ RunTime:0.000455s ]
- SELECT * FROM `column_content` WHERE `column_id` = 134 LIMIT 1 [ RunTime:0.000360s ]
- SELECT * FROM `column_content` WHERE `column_id` = 135 LIMIT 1 [ RunTime:0.000362s ]
- SELECT * FROM `column_content` WHERE `column_id` = 134 LIMIT 1 [ RunTime:0.000434s ]
- SELECT * FROM `column_content` WHERE `column_id` = 135 LIMIT 1 [ RunTime:0.000375s ]
- SELECT * FROM `column_content` WHERE `column_id` = 134 LIMIT 1 [ RunTime:0.000362s ]
- SELECT * FROM `column_content` WHERE `column_id` = 134 LIMIT 1 [ RunTime:0.000420s ]
- SELECT * FROM `column_content` WHERE `column_id` = 135 LIMIT 1 [ RunTime:0.000361s ]
- SELECT * FROM `column_content` WHERE `column_id` = 135 LIMIT 1 [ RunTime:0.000358s ]
- SELECT * FROM `column` WHERE `top_id` = 120 AND `lang` = 'cn' ORDER BY `weigh` DESC,`id` ASC [ RunTime:0.000490s ]
