The area is called the second Lagrangian Point.

这叫做第二朗日点。

Somehow I managed to go my whole degree without learning Lagrangian mechanics.

不知何故，我没有学习朗日力学的情况完成了整学位。

One key difference of this work is that the older solution was built upon a Lagrangian approach, which means that the simulation consists of computing the velocities and the pressure that acts on these particles.

这项工作的一主要不同点是，旧的方法是建立朗日方法的基础上，这意味着模拟方法包括计算速度和作用于这些粒子的压力。