名词
中文翻译：二阶方程
同义词：
['second-order equation', 'higher-order equation例句：1. The second-degree equation is a key to solving the problem.（二阶方程是解决该问题的关键。）']
例句：
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1. The second-degree equation is a key to solving the problem.
二阶方程是解决该问题的关键。
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2.In physics, the second-degree equation describes the motion of a particle under constant acceleration.
在物理学中，二阶方程描述了粒子在恒定加速度下的运动。
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3. The second-degree equation was used to model the behavior of the system.
二阶方程被用来模拟系统的运行行为。