应该是用头盔瞄准具目视瞄准，从背对阳光的方向发射，阳光照耀下球皮温度会比周围空气略高

来源: 天青水蓝于 2023-02-13 21:12:30 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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