灵敏电流计零点漂移是一种常见现象，对此也解释不一。用实验证明了灵敏电流计的零点漂移主要来自灵敏电流计内部结构不合理。提出了简便解决方法，简述了张丝的维修。
After experiments , the author finds that zero drift of sensitive galvanometers is mainly due to their inner structure and puts forward an easy method to solve the problem and maintain springs .
张丝