Etv教育電視:生活科學館丨小學常識科

2020 13:49
Synopsis
微波爐是常用的家庭電器,本節目的第一部分解釋微波爐將食物加熱的原理,並說明一些使用微波爐的安全守則。水在葉面上形成水 ...
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