作用与反作用力
双语例句原声例句
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作用与反作用力大小相等，方向相反。
Example 4:Action is equal to reaction, but it acts in a contrary direction.
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还有一个例子证明作用力,与负反作用力相等。
That's another example where you see action equals minus reaction.
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作用力等于反作用力，这是牛顿第三定律，因此Fij与Fji完全相等，但它们方向相反。
Actions equals minus reactions, according to Newton's Third Law, so this force, Fij, will be exactly the same as Fji, except in the opposite direction.
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This is the thing about action and reaction.
这就是作用力与反作用力
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