力场矢量场 force field
位移场和应力场 Displacement And Stress Fields
磁力场、现场 Field
修正压场及扰动应力场 DSFM
电力市场中的市场力 market power
我们从物理的角度,研究的另一类向量场是力场。
Now,the other kinds of vector fields we have seen physically are force fields.
力场由一个指向原点的向量场给出，并且此向量场的大小，与其到原点的距离的平方成反比。
That would be given by a vector field that points toward the origin and whose magnitude is inversely proportional to the square of a distance from the origin.
这在概念上很重要，因为很多力都是势场的梯度，比如重力场，电场。
And it's important conceptually because a lot of the forces are gradients of potentials, namely, gravitational force, electric force.
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