名词
中文翻译：二次方和
同义词：
['quadratic equation', 'quadratic form', 'quadratic function']
例句：
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1. The quadratic sum of the two numbers is 25.
这两个数的二次和是25。
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2.The quadratic sum of the squares of the angles is 90 degrees.
角的平方和的二次方是90度。
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3.The quadratic sum of the coordinates of a point in a plane is the distance from that point to the origin.
平面上一点坐标的二次和是该点到原点的距离。