亚洲理论高清在线观看,超碰人人澡人人胔,中文字幕手机在线观看,欧洲裸体兽交大黑妞,玖玖资源免费国产在线

Function: after the positive and negative plate group welding is completed into the battery tank, the high voltage is used to detect whether there is a short circuit between the positive and negative plates caused by lead slag, burr and lack of separator, the voltage level is adjustable。