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Uploaded by nctu on Apr 7, 2008
浮力是啥東西?鐵塊為何會下沉?船為何能浮在水面?翻過來的船會怎樣?船若全部沉入水底,翻過來的船又會怎樣?
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很喜歡這位老師的講解~
sams1979s 2 years ago
推~ 很優
推薦這部影片^^
j1988102 3 years ago
推~
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很喜歡這位老師的講解~
sams1979s 2 years ago
推~ 很優
sams1979s 2 years ago
推薦這部影片^^
j1988102 3 years ago
推~
j1988102 3 years ago