Whereas this power law model, which says things are slowing down, but never reaching an asymptote?

而幂律模型表明事物正在减速，但从未达到渐近线？

There's a model that also has just two parameters called a power law model that says things slow down, but it doesn't have an upper bound.

有一个模型也只有两个参数， 称为幂律模型， 它表示速度会减慢，但它没有上限。