类泡沫 meaning in English

class a foam

This paper also sets up an intrinsic bubble model to describe the development of a kind of stock market bubble , which includes only an exogenous fundamental , dividend . using the data of shanghai stock exchange from june 1996 to december 2001 , an empiric tests is done about the intrinsic model
该模型所涉及的自变量只有股利这一内生变量，而包括时间、政策、突发状况等外生变量均不对泡沫的含量产生直接作用，因此本模型所刻画的这类泡沫被称作“内在泡沫” 。