[填空题]
A student measures a length five times. All o :k.mub 9vfkpbx)lc +2f the measur3bwon p0 hf(:)q12dkv e xim)rements lie between $18.8 \mathrm{~cm}$ and $19.2 \mathrm{~cm}$. What should the student quote as the absolute uncertainty in the length? The absolute uncertainty is $cm$ (please only input numerical value without units and without the $\pm$ symbol.)
Post time 2024-8-21 21:38:19