the increasing number of 的意思是····数目的增加；例：

1. the increasing number of tourists to China .随着来中国旅游人数的增加。

2.The base of perianth tube was commonly bent , and had relativity the increasing number of tepals .花被筒基部弯曲变异也较常见，而且与花被裂片数目增多的变异存在相关性。an increasing number of 的意思是不断增长的…数目；越来越多的。例：

1. An increasing number of bacterial skin infections are resistant to antibiotic medicines .皮肤被越来越多的细菌感染会导致对抗生素的耐药。2.They note that an increasing number of similar tests are available to process cells , genetic material and proteins .他们提到越来越多的，与此类似的实验可以被用在细胞处理，基因原材料和蛋白质。incresing number of 前面一定要加冠词。因为number是可数名词。后面可以加单数名词，也可以加复数名词。另外：a growing number of=a incresing number of =more and more.