新年快乐！谢谢回复！如果单指i坦克帽上面一条条海绵，就是防止撞击头部，坦克里面基本都是金属。

来源: 少壮军人于 2023-01-22 09:46:46 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.