可靠性试验-畅读网

　　　　

可靠性试验

作者：胡湘洪

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内容简介:

本书以可靠性试验为主线，系统全面地介绍了产品在研制和生产等各阶段所需用到的可靠性试验技术，对各类可靠性试验的试验目的、试验原理、试验方案与试验条件等进行了阐述，并结合案例对试验实施方法进行了详细说明。本书共7章，对设计阶段的可靠性仿真，研制和批产阶段的环境应力筛选，适用于研制各阶段的可靠性强化，用于产品定型的可靠性鉴定，面向复杂大系统的可靠性综合评价，面向高可靠、长寿命指标的加速试验与快速评价等多种试验方法均进行了系统的介绍。

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SHOW FULL COLUMNS FROM `ls_goods_category` [ RunTime:0.000901s ]
SELECT `id`,`name`,`pid`,`image`,`level`,`is_show`,`is_recommend` FROM `ls_goods_category` WHERE `is_show` = 1 AND `del` = 0 AND `level` = 1 ORDER BY `id` ASC,`sort` DESC [ RunTime:0.000601s ]
SELECT `id`,`name`,`pid`,`image`,`level`,`is_show`,`is_recommend` FROM `ls_goods_category` WHERE `is_show` = 1 AND `del` = 0 AND `level` = 2 ORDER BY `id` ASC,`sort` DESC [ RunTime:0.000580s ]
SELECT `id`,`name`,`pid`,`image`,`level`,`is_show`,`is_recommend` FROM `ls_goods_category` WHERE `is_show` = 1 AND `del` = 0 AND `level` = 3 ORDER BY `sort` DESC [ RunTime:0.000577s ]
SHOW FULL COLUMNS FROM `ls_nav` [ RunTime:0.000755s ]
SELECT `id`,`name`,`pid`,`image`,`level`,`link`,`module`,`is_show`,`is_recommend` FROM `ls_nav` WHERE `is_show` = 1 AND `del` = 0 AND `level` = 1 ORDER BY `id` ASC,`sort` DESC [ RunTime:0.000501s ]
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SHOW FULL COLUMNS FROM `ls_friendly_link` [ RunTime:0.000811s ]
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SHOW FULL COLUMNS FROM `ls_goods` [ RunTime:0.000881s ]
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SHOW FULL COLUMNS FROM `ls_ad` [ RunTime:0.000615s ]
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SELECT `id`,`name` FROM `ls_goods_category` WHERE `id` = 5 LIMIT 1 [ RunTime:0.000708s ]
SELECT `id`,`name` FROM `ls_goods_category` WHERE `id` = 45 LIMIT 1 [ RunTime:0.000327s ]
SELECT `a`.*,`ap`.`width`,`ap`.`height` FROM `ls_ad` `a` INNER JOIN `ls_ad_position` `ap` ON `a`.`pid`=`ap`.`id` WHERE `pid` = 11 AND `ap`.`client` = '2' AND `a`.`status` = '1' AND `a`.`del` = '0' AND `ap`.`status` = '1' AND `ap`.`del` = '0' ORDER BY `sort` DESC,`id` DESC [ RunTime:0.001549s ]
SELECT `a`.*,`ap`.`width`,`ap`.`height` FROM `ls_ad` `a` INNER JOIN `ls_ad_position` `ap` ON `a`.`pid`=`ap`.`id` WHERE `pid` = 14 AND `ap`.`client` = '2' AND `a`.`status` = '1' AND `a`.`del` = '0' AND `ap`.`status` = '1' AND `ap`.`del` = '0' ORDER BY `sort` DESC,`id` DESC [ RunTime:0.000641s ]
SELECT * FROM `ls_goods` WHERE `del` = 0 AND `status` = 1 AND `create_time` <= 1791810544 ORDER BY `create_time` DESC LIMIT 5 [ RunTime:0.337847s ]

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