There are impact factor to be discussed such as solvent polarity and nucleofuge.

准备讨论的影响因子包括溶剂极性和离核试剂。

The impact factor of 2004 is 4.355 fold as that of 2001.

影响因子呈逐年上升趋势，2004年影响因子是2001年的4.355倍。

I first mentioned the idea of an impact factor in Science in 1955.

我第一次提到影响因子的概念是在1955年的《科学》上。

The "impact factor" is the number of citations per article per year.

“影响因子”即每篇文章每年被引用的次数。

Therefore, studying the impact factor of executive pay has great significance.

因此，研究高管薪酬的影响因素具有重要的意义。