宇宙到底有多重-畅读网

　　　　

宇宙到底有多重

作者：李慕南

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mobi/epub/pdf/awz3

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29世纪是人类全面探测太空、深入研究宇宙的世纪，是交叉科学全面兴起的世纪。“迈向宇宙，走向太空”已经成为时代的声音。当代人类的太空探测和宇宙研究，重点是天文、物理和航天探测的结合，这是一个历史的跨越。这种完美的结合极大地推动了人类宇宙研究的进程，并刺激了与之相关科学的发展。李楠编著的“宇航：开启新时代”一书非正式地提及太空科学这个概念，相信在不久的将来会成为现代科学中重要的一支。全书从基础宇宙知识、宇宙的奇思妙想、宇宙运用和探索宇宙等方面向读者展现了人类进军浩瀚宇宙的不懈努力！

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SHOW FULL COLUMNS FROM `ls_nav` [ RunTime:0.001691s ]
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SELECT `id`,`name` FROM `ls_goods_category` WHERE `id` = 5 LIMIT 1 [ RunTime:0.001053s ]
SELECT `id`,`name` FROM `ls_goods_category` WHERE `id` = 48 LIMIT 1 [ RunTime:0.000662s ]
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:0.000939s ]
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:0.000967s ]
SELECT * FROM `ls_goods` WHERE `del` = 0 AND `status` = 1 AND `create_time` <= 1772192504 ORDER BY `create_time` DESC LIMIT 5 [ RunTime:0.574209s ]

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