After study and tests, zirconium oxide ceramics is selected as the material for the frame of the potentiometer, and the problem is solved.

• 经研究和试验,改用氧化锆陶瓷材料制作电位器骨架,比较好地解决了这一问题,这是一条提高高温高湿条件下线绕电位器绝缘电阻的途径。