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+ T" f' @: L6 }3 t: X
m7 C2 s7 q7 \- f" l6 `3 a }the possibiolity is endless which will make it impossible to repeat the experiment. |