学生蓄电池充电后,经过一段时间,两极接线处便出现白、黄、兰绿色的糊状反应物。久而久之,导线往往接触不良,严重影响实验效果。为解决这个问题,在接线桩一侧,用电铬铁焊上铜导线,具体步骤是:①、先将导线挂锡,再用铁锉在接线处锉出铅的新面。②、焊时先将焊头压住焊物、不 After the student battery is charged, after a period of time, white, yellow and blue-green paste reactants appear at the poles. Over time, the wire is often poorly exposed, seriously affecting the experimental results. To solve this problem, the side of the wiring pile, the use of electric welding of ferrochrome copper wire, the specific steps are: ①, first wire hanging tin, and then use the iron file in the wiring of the new lead fillet. ②, welding first welding head pressure welding, no