短語詞組短語potential fall detail 電勢降zone of potential fall 勢降區(qū)anode potential fall [電子]陽極電位降Potential for a Fall 唱片名fall of potential 電位降;電壓降;墜落;位降test fall of potential 位降檢驗cathode fall of potential 陰極電位降fall of potential method 電壓降法 返回 potential fall