它是一个二维问题，因为我们已经发现，目前，它只是一维的。

And we'll make it a two-dimensional problem, because we have seen only one-dimensional problems now.

youdao

跟我刚才做的相似，但是问题更简单，因为弹力是，完全一维的。

Very similar to what I just did, but now it is a simpler problem, because a spring is exactly one-dimensional.

youdao

记得吗，一维的弹簧，周期和振幅，无关？

Remember the one-dimensional spring that we had a period which was independent of the amplitude?

youdao