請問采用延時爆破，將不同炸藥設置成不同part，設置不同起爆時間，在二維的條件下可以實現延時爆破，可是為什么在三維的情況下炸藥會同時起爆？關鍵字如下。

*INITIAL_DETONATION

8,-231.8528,423.2998,-100,0

8,-239.6607,501.5643, -100,0

8,-107.5751,268.5201,50,0

8,-261.6085,268.5199,50,0

8,-375.5060,452.6823,-100,0

8,-398.6322,527.2477,-100,0

8,-247.4685,579.8285,-100,0

8,-352.3800,378.1166,-100,0

7,-107.5147,176.7752,50,15

7,-261.6078,176.7759,50,15

7,-428.5758,338.5496,-100,15

7,-461.3823,409.0905,-100,15

7,-148.4320,443.5698,-100,15

7,-494.1889,479.631