| Subject | English | German |
| tech. | direct-axis component of current | Längsstrom |
| mech.eng., el. | direct-axis component of magnetomotive force | Längsdurchflutung |
| mech.eng., el. | direct-axis component of synchronous generated voltage | Längsanteil der Polradspannung |
| el.mot. | direct-axis component of synchronous generated voltage | Hauptfeld-Längsspannung |
| tech. | direct-axis component of voltage | Längsspannung |
| tech. | direct-axis current | Längsstrom |
| phys. | direct-axis electromotive force | Längsfeld-elektromotorische Kraft |
| tech. | direct-axis reactance | subtransiente Reaktanz |
| tech. | direct-axis reactance | Anfangsreaktanz |
| tech. | direct-axis short-circuit time constant | Anfangszeitkonstante |
| mech.eng., el. | direct-axis subtransient open-circuit time constant | Subtransient-Leerlauf-Zeitkonstante der Längsachse |
| el.mot. | direct-axis sub-transient open-circuit time constant | Subtransient-Leerlaufzeitkonstante der Längsachse |
| mech.eng., el. | direct-axis subtransient reactance | Subtransient-Längsreaktanz |
| el.mot. | direct-axis sub-transient reactance | Subtransient-Längsreaktanz |
| tech. | direct-axis subtransient reactance | Subtransientlängsreaktanz |
| mech.eng., el. | direct-axis subtransient short-circuit time constant | Subtransient-Kurzschluß-Zeitkonstante der Längsachse |
| el.mot. | direct-axis sub-transient short-circuit time constant | Subtransient-Kurzschlusszeitkonstante der Längsachse |
| mech.eng., el. | direct-axis subtransient voltage | subtransiente Längsspannung |
| el.mot. | direct-axis sub-transient voltage | Subtransient-Längsspannung |
| meas.inst. | direct-axis synchronous impedance | synchrone Längsimpedanz |
| mech.eng., el. | direct-axis synchronous reactance | Synchron-Längsreaktanz |
| tech. | direct-axis synchronous reactance | Synchronlängsreaktanz |
| mech.eng., el. | direct-axis transient open-circuit time constant | Transient-Leerlauf-Zeitkonstante der Längsachse |
| el.mot. | direct-axis transient open-circuit time constant | Transient-Leerlaufzeitkonstante der Längsachse |
| tech. | direct-axis transient open-circuit time constant | Leerlauf-Zeitkonstante |
| tech. | direct-axis transient reactance | Transientlängsreaktanz |
| mech.eng., el. | direct-axis transient reactance | Transient-Längsreaktanz |
| tech. | direct-axis transient reactance | Uebergangsreaktanz |
| tech. | direct-axis transient reactance | transiente Reaktanz |
| el.mot. | direct-axis transient short-circuit time constant | Transient-Kurzschlusszeitkonstante der Längsachse |
| mech.eng., el. | direct-axis transient short-circuit time constant | Transient-Kurzschluß-Zeitkonstante der Längsachse |
| tech. | direct-axis transient short-circuit time constant | Uebergangszeitkonstante |
| mech.eng., el. | direct-axis transient voltage | transiente Längsspannung |
| el.mot. | direct-axis transient voltage | Transient-Längsspannung |
| phys. | direct-axis voltage | Längsspannung |