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專題：共2篇范文

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  關(guān)于牛頓第二定律研究論文證明

  “The alteration of motion is ever proportional to the motive force impressed; and is made in the direction of the right... [全文]

  2022-04-22

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  關(guān)于牛頓第二定律研究論文證明

  “The alteration of motion is ever proportional to the motive force impressed; and is made in the direction of the right... [全文]

  2022-04-22