名词
中文翻译：双音节声波
同义词：
['dual-tone sound', 'double-tone sound']
例句：
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1.The quadratic equations are used to describe the relationship between two variables.
双曲方程用于描述两个变量之间的关系。
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2.The quadratic equation has a solution that can be expressed as a square root.
双曲线方程有一个解，可以表示为平方根。
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3. In physics, the quadratic equation is often used to model the motion of objects under gravity.
在物理学中，双曲线方程常被用来模拟物体在重力作用下的运动。