一、旧干电池的妙用四则用久失效的干电池切勿弃之,它在理疗机或其他机器维修工作中还有很多用处,现介绍如下四种:1.电池锌皮做盐酸锌焊剂药用盐酸溶液50ml或100ml、200ml、500ml等均可,随耗用量任意选择置玻璃瓶内,将电池锌皮剪成小条块,放入溶液内,100ml溶液放入1～2只干电池锌皮,反应 First, the magical effect of the old batteries Fourth, with a long dead battery do not abandon it, it is in the physiotherapy machine or other machine repair work there are many uses, are presented in the following four: 1. Zinc Battery Zinc Hydrochloride flux medicinal hydrochloric acid Solution 50ml or 100ml, 200ml, 500ml, etc. can be arbitrarily selected with glass bottle, the battery zinc skin cut into small pieces, into the solution, 100ml solution into 1 or 2 batteries zinc skin, reaction