转轮式机电计程仪 impeller-type log ; trident log

机电计程仪 electric log

记录式机电计程仪 recording log

拖曳转轮式机电计程仪 towed log

电子计程仪 electronic log

电动计程仪 electric log

双分量电磁计程仪 two-component electromagnetic log

电磁计程仪 electromegnatic log ; Powered submarines electromagnetic log ; electromagnetic log

电[动]计程仪 electric log