electric penetration knife
Electric penetration knife gate valve ,gate closely contacts with the seat , Principle is that there is a diameter size of circular port in the gate ,opening and closing gate makes circular port takes off and consistent action with diameter .
基于1个网页-相关网页
electric penetration knife
电刺刀
以上为机器翻译结果，长、整句建议使用 人工翻译 。