在线水质分析仪器-畅读网

　　　　

在线水质分析仪器

作者：杨波

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mobi/epub/pdf/awz3

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科学技术 >> 工业技术

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内容简介:

本书是一部在线水质分析仪器及其应用技术方面的专著。全书共15章,内容包括在线水质分析仪器的主流技术和主要应用情况,重点介绍了水质参数在线分析仪、水中有机污染物在线分析仪、水中营养盐在线分析仪、水中重金属在线分析仪和其他常用在线水质分析仪的原理、结构、特点及使用维护知识等。本书主要读者为在线水质分析仪器的研制、使用、维护、管理、工程设计人员和环保监管监测人员,可供给排水行业、工业水处理行业和水质监测行业等相关从业人员参考,也可供大专院校有关专业师生参考。

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SELECT `id`,`name` FROM `ls_goods_category` WHERE `id` = 5 LIMIT 1 [ RunTime:0.001410s ]
SELECT `id`,`name` FROM `ls_goods_category` WHERE `id` = 45 LIMIT 1 [ RunTime:0.001460s ]
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:0.001906s ]
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:0.001582s ]
SELECT * FROM `ls_goods` WHERE `del` = 0 AND `status` = 1 AND `create_time` <= 1750312034 ORDER BY `create_time` DESC LIMIT 5 [ RunTime:0.653634s ]

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