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

不知何故，我在没有学习拉力学的情况下完成整学位。

The area is called the second Lagrangian Point.

区域叫做第二拉点。

It's called AQUAL, which stands for A Quadratic Lagrangian.

它被称为AQUAL理论，全称是二次拉。

If you know the Lagrangian for the standard model, you are done, you know.

如果你知道标准模型的拉量，你就搞定， 你知道的。

Now, we talked about Newtonian mechanics, leading all through different Lagrangian, Hamiltonian mechanics.

现在，我们讨论牛顿力学，贯穿不同的拉力学和哈密顿力学。

[Derek] If this is the action, then T minus V is called the Lagrangian.

- [Derek] 如果是作用，那么 T 减去 V 被称为拉量。

Now let's replace everything we did before with the Lagrangian.

现在让我们用拉量来代替之前所做的一切。

This theory modified  Newtonian gravity by changing the classical lagrangian to a lagrangian involving a general  function and the threshold acceleration term.

该理论通过将经典拉改为包含一般函数和阈值加速度项的拉来修正牛顿引力。

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.

项工作的一主要不同点是，旧的方法是建立在拉方法的基础上，意味着模拟方法包括计算速度和作用于些粒子的压力。

But with the Lagrangian approach, you have this machine crank out the principle of least action on it and you get the right equation to motion and you don't have to be a good physicist.

但是利用拉方法，您可以让台机器在其上执行最小作用量原理，并得到正确的运动方程，而您不必成为一名优秀的物理学家。

So the principle of least action that we write as integral of Ldt, L being being the Lagrangian, the T minus V, the kinetic minus potential energy, they don't call it Lagrange's Principle, they call it Hamilton's Principle.

- 因此，我们将最小作用量原理写为 Ldt 的积分，L 是拉量，T 减去 V，即动能减去势能，他们不称之为拉原理，而是称之为哈密顿原理。