標題: f.1 問題 [打印本頁]

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作者: Samsan    時間: 2008-12-21 12:56     標題: f.1 問題

why bunsen burner open the air hole ,the color of the flame will change from yellow to blue?

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作者: Samsan    時間: 2008-12-22 18:13

what are you saying?
explain.....

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作者: sam兄    時間: 2008-12-23 22:16

Maybe using Chinese to explain it is better to understand

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