av在线有码人妻_亚洲久悠悠色悠在线播_日本乱人伧片中文二区_国产性天天综合网-国产精品1024-亚洲精品有码电影-国产香蕉视频在线一区免费-久久精品亚洲精品国产色婷-

1. What is the cause of shell explosion of batteries? A. : The necessary condition of causing shell explosion of batteries is that batteries are long-lasting by comparison when they encounter electric spark. The theory of battery shell expl..