释放仓投一个实心弹与投一个气球，对本身速度姿态影响不一样的，不管区别多细微，仪器能识别的。动量守恒，与空气没半毛钱关系的

来源: 排名分先后于 2023-12-31 22:37:38 [旧帖] [给我悄悄话] 本文已被阅读：次

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