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PCB设计中对差分走线的几个误区

对于PCB工程师来说，最关注的还是如何确保在实际走线中能完全发挥差分走线的这些优势。也许只要是接触过Layout的人都会了解差分走线的一般要求，那就是"等长、等距"。等长是为了保证两个差分信号时刻保持...

2021-11-12

高速PCB过孔的使用

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2021-11-12

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基本文件流程错误 SQL 调试

D:\wwwroot\gddgrje\wwwroot\index.php ( 0.88 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\autoload.php ( 0.17 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\composer\autoload_real.php ( 2.36 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\composer\ClassLoader.php ( 13.14 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\composer\autoload_static.php ( 8.89 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\think-helper\src\helper.php ( 7.35 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\opis\closure\functions.php ( 0.95 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\symfony\polyfill-mbstring\bootstrap.php ( 6.42 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\symfony\polyfill-php72\bootstrap.php ( 1.78 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\symfony\polyfill-intl-normalizer\bootstrap.php ( 0.60 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\symfony\polyfill-php70\bootstrap.php ( 0.85 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\symfony\polyfill-php80\bootstrap.php ( 1.46 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\symfony\polyfill-intl-idn\bootstrap.php ( 4.50 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\bingher\ueditor\src\helper.php ( 3.83 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\symfony\var-dumper\Resources\functions\dump.php ( 0.79 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\think-captcha\src\helper.php ( 1.42 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\framework\src\think\App.php ( 14.14 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\framework\src\think\Container.php ( 14.73 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\psr\container\src\ContainerInterface.php ( 1.07 KB )
D:\wwwroot\gddgrje\wwwroot\app\provider.php ( 0.19 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\framework\src\think\Http.php ( 6.04 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\think-helper\src\helper\Str.php ( 7.27 KB )
D:\wwwroot\gddgrje\wwwroot\app\Request.php ( 0.09 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\framework\src\think\Request.php ( 53.24 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\framework\src\think\Env.php ( 4.15 KB )
D:\wwwroot\gddgrje\wwwroot\app\common.php ( 0.03 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\framework\src\helper.php ( 18.36 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\framework\src\think\Config.php ( 4.91 KB )
D:\wwwroot\gddgrje\wwwroot\config\app.php ( 1.21 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\framework\src\think\facade\Env.php ( 1.67 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\framework\src\think\Facade.php ( 2.71 KB )
D:\wwwroot\gddgrje\wwwroot\config\cache.php ( 0.80 KB )
D:\wwwroot\gddgrje\wwwroot\config\captcha.php ( 1.06 KB )
D:\wwwroot\gddgrje\wwwroot\config\console.php ( 0.23 KB )
D:\wwwroot\gddgrje\wwwroot\config\cookie.php ( 0.49 KB )
D:\wwwroot\gddgrje\wwwroot\config\database.php ( 2.31 KB )
D:\wwwroot\gddgrje\wwwroot\config\filesystem.php ( 0.75 KB )
D:\wwwroot\gddgrje\wwwroot\config\lang.php ( 0.75 KB )
D:\wwwroot\gddgrje\wwwroot\config\log.php ( 1.37 KB )
D:\wwwroot\gddgrje\wwwroot\config\middleware.php ( 0.19 KB )
D:\wwwroot\gddgrje\wwwroot\config\route.php ( 1.54 KB )
D:\wwwroot\gddgrje\wwwroot\config\session.php ( 0.57 KB )
D:\wwwroot\gddgrje\wwwroot\config\trace.php ( 0.34 KB )
D:\wwwroot\gddgrje\wwwroot\config\ueditor.php ( 1.40 KB )
D:\wwwroot\gddgrje\wwwroot\config\view.php ( 1.07 KB )
D:\wwwroot\gddgrje\wwwroot\app\event.php ( 0.25 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\framework\src\think\Event.php ( 6.65 KB )
D:\wwwroot\gddgrje\wwwroot\app\service.php ( 0.13 KB )
D:\wwwroot\gddgrje\wwwroot\app\AppService.php ( 0.26 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\framework\src\think\Service.php ( 1.67 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\framework\src\think\Lang.php ( 7.96 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\framework\src\lang\zh-cn.php ( 12.88 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\framework\src\think\initializer\Error.php ( 3.19 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\framework\src\think\initializer\RegisterService.php ( 1.33 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\services.php ( 0.29 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\framework\src\think\service\PaginatorService.php ( 1.52 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\framework\src\think\service\ValidateService.php ( 0.99 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\framework\src\think\service\ModelService.php ( 1.51 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\bingher\ueditor\src\UeditorService.php ( 0.91 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\think-captcha\src\CaptchaService.php ( 0.54 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\think-migration\src\Service.php ( 1.94 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\think-multi-app\src\Service.php ( 1.08 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\think-trace\src\Service.php ( 0.77 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\framework\src\think\Middleware.php ( 6.78 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\framework\src\think\initializer\BootService.php ( 0.77 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\think-orm\src\Paginator.php ( 11.39 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\framework\src\think\Validate.php ( 45.67 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\think-orm\src\Model.php ( 25.87 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\think-orm\src\model\concern\Attribute.php ( 16.98 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\think-orm\src\model\concern\RelationShip.php ( 26.03 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\think-orm\src\model\concern\ModelEvent.php ( 2.26 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\think-orm\src\model\concern\TimeStamp.php ( 5.36 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\think-orm\src\model\concern\Conversion.php ( 7.73 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\think-helper\src\contract\Arrayable.php ( 0.09 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\think-helper\src\contract\Jsonable.php ( 0.13 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\framework\src\think\Db.php ( 2.87 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\think-orm\src\DbManager.php ( 8.86 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\framework\src\think\Log.php ( 8.50 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\framework\src\think\Manager.php ( 3.97 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\psr\log\Psr\Log\LoggerInterface.php ( 3.04 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\framework\src\think\Cache.php ( 4.79 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\psr\simple-cache\src\CacheInterface.php ( 4.50 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\think-helper\src\helper\Arr.php ( 15.54 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\framework\src\think\cache\driver\File.php ( 7.38 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\framework\src\think\cache\Driver.php ( 7.81 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\framework\src\think\contract\CacheHandlerInterface.php ( 2.25 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\framework\src\think\Route.php ( 23.07 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\framework\src\think\route\RuleName.php ( 4.87 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\framework\src\think\route\Domain.php ( 5.41 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\framework\src\think\route\RuleGroup.php ( 13.61 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\framework\src\think\route\Rule.php ( 22.24 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\framework\src\think\route\RuleItem.php ( 9.20 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\bingher\ueditor\src\util\Recource.php ( 1.25 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\bingher\ueditor\src\util\FileUtil.php ( 7.31 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\framework\src\think\Console.php ( 21.27 KB )
D:\wwwroot\gddgrje\wwwroot\app\middleware.php ( 0.25 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\framework\src\think\Pipeline.php ( 2.60 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\think-trace\src\TraceDebug.php ( 2.94 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\framework\src\think\middleware\SessionInit.php ( 2.02 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\framework\src\think\Session.php ( 1.80 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\framework\src\think\session\driver\File.php ( 6.31 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\framework\src\think\contract\SessionHandlerInterface.php ( 0.87 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\framework\src\think\session\Store.php ( 7.26 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\think-multi-app\src\MultiApp.php ( 7.39 KB )
D:\wwwroot\gddgrje\wwwroot\app\index\route\route.php ( 1.32 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\framework\src\think\facade\Route.php ( 4.76 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\framework\src\think\route\dispatch\Controller.php ( 6.33 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\framework\src\think\route\Dispatch.php ( 6.58 KB )
D:\wwwroot\gddgrje\wwwroot\app\index\controller\News.php ( 0.28 KB )
D:\wwwroot\gddgrje\wwwroot\app\common\BaseIndex.php ( 15.87 KB )
D:\wwwroot\gddgrje\wwwroot\app\BaseController.php ( 2.03 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\framework\src\think\facade\Config.php ( 1.37 KB )
D:\wwwroot\gddgrje\wwwroot\app\index\model\Language.php ( 0.09 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\think-orm\src\db\connector\Mysql.php ( 4.37 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\think-orm\src\db\PDOConnection.php ( 47.05 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\think-orm\src\db\Connection.php ( 7.16 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\think-orm\src\db\ConnectionInterface.php ( 4.56 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\think-orm\src\db\builder\Mysql.php ( 13.88 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\think-orm\src\db\Builder.php ( 39.39 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\think-orm\src\db\Query.php ( 11.10 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\think-orm\src\db\BaseQuery.php ( 35.72 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\think-orm\src\db\concern\TimeFieldQuery.php ( 7.50 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\think-orm\src\db\concern\AggregateQuery.php ( 2.83 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\think-orm\src\db\concern\ModelRelationQuery.php ( 15.49 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\think-orm\src\db\concern\ResultOperation.php ( 7.10 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\think-orm\src\db\concern\Transaction.php ( 2.77 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\think-orm\src\db\concern\WhereQuery.php ( 16.34 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\think-orm\src\db\concern\JoinAndViewQuery.php ( 6.88 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\think-orm\src\db\concern\ParamsBind.php ( 2.75 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\think-orm\src\db\concern\TableFieldInfo.php ( 2.51 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\framework\src\think\log\driver\File.php ( 6.05 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\framework\src\think\contract\LogHandlerInterface.php ( 0.86 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\framework\src\think\log\Channel.php ( 6.41 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\framework\src\think\facade\View.php ( 1.71 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\framework\src\think\View.php ( 4.31 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\think-orm\src\model\Collection.php ( 6.11 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\think-helper\src\Collection.php ( 15.83 KB )
D:\wwwroot\gddgrje\wwwroot\app\index\model\CustomTag.php ( 0.09 KB )
D:\wwwroot\gddgrje\wwwroot\app\index\model\Banner.php ( 0.09 KB )
D:\wwwroot\gddgrje\wwwroot\app\index\model\Webdata.php ( 0.09 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\framework\src\think\facade\Session.php ( 1.15 KB )
D:\wwwroot\gddgrje\wwwroot\app\index\model\Column.php ( 0.09 KB )
D:\wwwroot\gddgrje\wwwroot\app\index\model\ColumnContent.php ( 0.54 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\think-orm\src\paginator\driver\Bootstrap.php ( 5.41 KB )
D:\wwwroot\gddgrje\wwwroot\app\index\model\Link.php ( 0.08 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\framework\src\think\Response.php ( 9.86 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\framework\src\think\response\View.php ( 3.20 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\framework\src\think\Cookie.php ( 6.15 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\think-view\src\Think.php ( 8.42 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\think-template\src\Template.php ( 46.62 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\think-template\src\template\driver\File.php ( 2.33 KB )
D:\wwwroot\gddgrje\wwwroot\runtime\index\temp\4bcb04aa8bd33fc0819af9f3312e3604.php ( 24.38 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\framework\src\think\facade\Cache.php ( 2.02 KB )
D:\wwwroot\gddgrje\wwwroot\vendor\topthink\think-trace\src\Html.php ( 4.49 KB )

CONNECT:[ UseTime:0.003665s ] mysql:host=ql.bgp171.vhostgo.com;port=3306;dbname=gddgrje;charset=utf8
SHOW FULL COLUMNS FROM `language` [ RunTime:0.012557s ]
SELECT * FROM `language` WHERE `is_default` = '1' LIMIT 1 [ RunTime:0.000520s ]
SELECT * FROM `language` WHERE `is_default` = '1' AND `mark` = 'cn' LIMIT 1 [ RunTime:0.000478s ]
SELECT * FROM `language` [ RunTime:0.000382s ]
SHOW FULL COLUMNS FROM `custom_tag` [ RunTime:0.009013s ]
SELECT `variate`,`value` FROM `custom_tag` WHERE `custom_tag_id` <> 0 AND `lang` = 'cn' [ RunTime:0.000514s ]
SHOW FULL COLUMNS FROM `banner` [ RunTime:0.010789s ]
SELECT * FROM `banner` WHERE FIND_IN_SET('122', `column`) AND `lang` = 'cn' ORDER BY `weigh` DESC [ RunTime:0.000956s ]
SHOW FULL COLUMNS FROM `webdata` [ RunTime:0.010978s ]
SELECT * FROM `webdata` WHERE `lang` = 'cn' LIMIT 1 [ RunTime:0.000678s ]
UPDATE `webdata` SET `view_count` = `view_count` + 1 WHERE `lang` = 'cn' [ RunTime:0.000901s ]
UPDATE `webdata` SET `pageview` = `pageview` + 1 WHERE `lang` = 'cn' [ RunTime:0.000541s ]
SHOW FULL COLUMNS FROM `column` [ RunTime:0.011003s ]
SELECT * FROM `column` WHERE `id` = 122 LIMIT 1 [ RunTime:0.000655s ]
SELECT * FROM `column` WHERE `id` = 109 LIMIT 1 [ RunTime:0.000498s ]
SELECT * FROM `column` WHERE `id` = 122 LIMIT 1 [ RunTime:0.000374s ]
SELECT * FROM `column` WHERE `pid` = 122 [ RunTime:0.000517s ]
SHOW FULL COLUMNS FROM `column_content` [ RunTime:0.010646s ]
SELECT COUNT(*) AS think_count FROM `column_content` WHERE `column_id` = 122 AND `lang` = 'cn' [ RunTime:0.001047s ]
SELECT * FROM `column_content` WHERE `column_id` = 122 AND `lang` = 'cn' ORDER BY `top_ok` DESC,`com_ok` DESC,`weigh` DESC,`edittime` DESC LIMIT 0,9 [ RunTime:0.001310s ]
SHOW FULL COLUMNS FROM `link` [ RunTime:0.008492s ]
SELECT * FROM `link` ORDER BY `weigh` DESC [ RunTime:0.000417s ]
SELECT * FROM `column` WHERE `pc_nav` IN (1,3) AND `lang` = 'cn' ORDER BY `weigh` DESC,`id` ASC [ RunTime:0.000466s ]
SELECT * FROM `column` WHERE `pc_nav` IN (2,3) AND `lang` = 'cn' ORDER BY `weigh` DESC,`id` ASC [ RunTime:0.000441s ]
SELECT * FROM `column` WHERE `top_id` = 109 AND `lang` = 'cn' ORDER BY `weigh` DESC,`id` ASC [ RunTime:0.000804s ]

0.303476s