second approximation

例句：

1. 1. In the field of physics, the second approximation is used to describe the behavior of a system when it is close to equilibrium.
   在物理学领域，第二近似用于描述系统接近平衡状态时的行为。
2. 2. The second approximation method is often used in engineering design to estimate theperformance of structures under various loads.
   工程设计中常用第二近似法来估计结构在不同载荷下的性能。
3. 3. The second approximation is crucial for understanding the behavior of complex systems, as it allows us to account for the effects of small perturbations on the overall system.
   对于理解复杂系统的行为至关重要，因为第二近似允许我们考虑小扰动对整个系统的影响。