first order differential equation

例句：

1. 1. This is afirst-order differential equation that describes the motion of a particle in a simple harmonic oscillator.
   这是一个描述粒子在简单谐振子中运动的一阶微分方程。
2. 2. The first-order differential equation can be solved using numerical methods such as Runge-Kutta method.
   可以通过Runge-Kutta方法等数值方法求解一阶微分方程。
3. 3. The first-order differential equation is widely used in engineering and science to model the behavior of systems with time-dependentparameters.
   一阶微分方程在工程和科学中被广泛使用，用于模拟具有时间依赖参数的系统行为。