for the glass fragment to strike her, the glass has to be smash at a precise speed and precise angle with a precise orientation, and possibly if the glass has any pre-existing defect. tvb now,tvbnow,bttvb0 Z" M: u4 \: Y
公仔箱論壇9 }# w* u g' B; r
the possibiolity is endless which will make it impossible to repeat the experiment. |