觀看人次：
685
在奧克拉荷馬州科學博物館，主持人向學生們解釋如何利用滑輪獲得超強大的「機械利益」。另外，還教觀眾如何在家中進行巧妙的科學玩具和實驗。
#物理 #化學 #科學 #DIY
分級:
片長:
發音:
發行:
導演:
分級: 普遍級
片長: 1 min
發音: 華語
發行: 2018-01
導演: 安偉民
片長: 22 min
發音: 英語
發行: 2020-03
導演: Steve Rotfeld
片長: 51 min
發行: 2018-09
導演: BBC 製作
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