[填空题]
One means of enrichin:mr2ou9,olfk.dh 5n,p8i zndg uranium is by diffusionh/y mrzts+0vs w/s1g.xn6b b ( of the gas $\text{UF}_6$. Calculate the ratio of the speeds of molecules of this gas containing $_{92}^{235}\text{U}$ and $_{92}^{238}\text{U}$ on which this process depends. :1