Humm胡姆humn.嗡嗡声；哼声；杂声v.发低哼声；哼(曲子)；活跃int.哼；嗯（用以表示犹豫）Humic acid copper腐植酸铜humics reactivity腐殖质反应性humnaity and arts人文思想hum potentiometer哼声电位计hum-bucking coi[电] 交流声反应线圈Humblot's Sunbirdhumic fertileizer腐植肥hum noise voltage交流声电压Humber Suspension亨伯吊桥humnaistic spirit人文精神