[填空题]
A student measures a length ilb0o-v7 mx. mfiykq/ o ia+a5tv1 rg,7xo/5a fdve times. All of the measurements 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 $cm$ (Do not include the $\pm$ symbol nor the unit)
Post time 2024-8-21 21:38:19