| Subject | English | French |
| transp., industr., construct. | bar underframe | châssis en profilés |
| transp., industr., construct. | bar underframe | châssis en barres |
| transp., industr., construct. | cast steel underframe | châssis en acier moulé |
| transp. | cross-bar of underframe | entretoise de châssis |
| transp. | cross-member underframe | entretoise de châssis |
| transp. | cushioned underframe car | wagon à attelage souple |
| transp. | engine equipped with a rigid underframe | locomotive à châssis rigide |
| transp. | girder-built underframe of a locomotive | châssis-poutre d'une locomotive |
| transp. | locomotive equipped with a rigid underframe | locomotive à châssis rigide |
| transp. | locomotive underframe | châssis de locomotive |
| transp. | locomotive with a single underframe | locomotive à châssis unique |
| transp. | longitudinal girder of underframe | longeron |
| transp. | longitudinal girder of underframe | brancard de châssis |
| transp., industr., construct. | sectional underframe | châssis en profilés |
| transp., industr., construct. | sectional underframe | châssis en barres |
| transp. | side-sill of underframe | longeron |
| transp. | side-sill of underframe | brancard de châssis |
| transp. | single underframe locomotive | locomotive à châssis unique |
| transp. | sole-bar of underframe | longeron |
| transp. | sole-bar of underframe | brancard de châssis |
| transp. | underframe cross-tie | tirant de châssis |
| el.tract. | underframe-mounted motor | moteur à suspension dans le châssis |
| transp. | variable-section underframe | profilé à section variable |
| gen. | walking underframe | base marchante |