ballistics
柯林斯词典
1. N-UNCOUNT Ballistics is the study of the movement of objects that are shot or thrown through the air, such as bullets fired from a gun. 发射学; 弹道学
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1. N-UNCOUNT Ballistics is the study of the movement of objects that are shot or thrown through the air, such as bullets fired from a gun. 发射学; 弹道学