各种电子仪器、收音机、录音机、电视机等,往往因电位器接触不良,或质量不稳定,产生噪音,破坏图象并影响音质。用酒精或溶剂汽油擦洗,虽可改善上述弊病,但不能持久,不久又会重复出现上述现象。如考虑在接触点面上,喷具有润滑性的清洁剂,形成一层复盖保护油膜,有效地阻 A variety of electronic equipment, radios, tape recorders, televisions and so on, often due to poor potentiometer contact, or quality is unstable, resulting in noise, damage to the image and affect the sound quality. Scrub with alcohol or solvent gasoline, although can improve the above shortcomings, but can not be sustained, will soon repeat the above phenomenon. If considered at the point of contact surface, spray with a lubricious detergent to form a protective cover film, effectively blocking