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Newton began to search for a mathematical expression of his idea.
牛顿开始探索用数学来表达他的观念。
youdao
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By equation we mean a mathematical expression in which the two sides balance.
所谓方程式，是指两边相等的数学式。
youdao
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By equation we mean a mathematical expression in which the two sides balance.
所谓方程式，是指两边相等的数学式。
youdao