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. 公仔箱論壇% c3 T0 f2 F. \ {* p
9 F! t9 I! Y) }/ j) h) v7 Ethe possibiolity is endless which will make it impossible to repeat the experiment. |