两个句子中间用逗号的疑问

When contaminating the soil with gasoline properties such as density of compaction are affected, the results show how this parameter decreases up to 2.18 %, a decrease in the density of compaction results in a higher void ratio, which, in turn, indicates a soil very susceptible to large deformations under imposed loads.

这个句子在affected 和 the 之间用逗号不对吧，在affected的前面已经有一个句子了

这个英语句子无疑是由汉语翻译过来的，既有逻辑错误，也有英语结果错误与无谓的重复。网友可将汉语原文附上，依据汉语原文的逻辑，才能修改这段英文。（现在的英文是读不通的。）