A U.S.Air Force spokesman described the maneuvers of pilots aboard its F-15e Strike Eagle.

VOA: standard.2009.11.15

It will typically look like this and the formula we say is F = - kx, where k is called "The force constant."

图像看上去一般就像这样,对应的式子是 F = - kx,k 叫做"弹性系数"

耶鲁公开课 - 基础物理课程节选

It will typically look like this and the formula we say is F = - kx, where k is called "The force constant."

图像看上去一般就像这样,对应的式子是 F = - kx,k 叫做"弹性系数"

耶鲁公开课 - 基础物理课程节选