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360儿童百科大讲堂——神奇的古代科学技术（下）

小朋友们，古代人在航海中应用到了哪些技术呢？古代的历法又是通过什么仪器来观测、制定的呢？让我们一起走进视频，看看古代人的科学技术吧~

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以下是360儿童#百科讲堂#的官方微信：ertongzhushou360 或 13436831486 （直接扫描二维码可进）添加时备注“百科讲堂”管理员会拉你入群。

官方QQ群：826287352（直接扫描二维码可进），加入这个大家庭来一起讨论学习知识吧！

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