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Terms for subject Explosives and Explosive Ordnance Disposal containing Focused | all forms | exact matches only
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An increase in air temperature causes an increase in the speed of sound, which means that in these conditions airblast emissions can be focused back toward the ground by atmospheric refraction大气温度的增高、促使声速增加、这是说在这些条件下、大气折射可将冲击波挡回到地面

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