[问答题]
A turntable of radiud rhqod: w 09snx11r0bae9(g ds 5q ksgv1inlffs +s : 2cf3/(dh$R_1$ is turned by a circular rubber roller of radius $R_2$ in contact with it at their outer edges. What is the ratio of their angular velocities, $\omega_1$ / $\omega_2$