久久久国产精品视频袁燕,99re久久精品国产,亚洲欧美日韩国产综合v,天天躁夜夜躁狠狠久久,激情五月婷婷激情五月婷婷

  • 回復
  • 收藏
  • 點贊
  • 分享
  • 發(fā)新帖

Ask some question about gas tube.TKS!

Who can tell me why the gas tube should add a sheet copper?(Some details can refer to picture).TKS!
全部回復(1)
正序查看
倒序查看
power_sz
LV.7
2
2006-11-01 23:56
可能是為了防止玻璃體爆炸吧?安規(guī)要求!
0
回復
立
即
發(fā)
帖