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重點摘要:力的種類與力的合成

此單元我們先整理自然界常見的四種力彈力,重力,正向力,張力的特性及靜力平衡時合力=0的向量合成. [閱讀內容]

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Posted in 合力=0, 重點摘要.

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By admin – 2009 年 02 月 01 日

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