| English | eng-000 |
| straight-through | |
| 普通话 | cmn-000 | 直流 |
| English | eng-000 | constant-current |
| English | eng-000 | direct current |
| English | eng-000 | galvanic current |
| English | eng-000 | once-through |
| English | eng-000 | single-pass |
| English | eng-000 | straight flow |
| English | eng-000 | through-flow |
| English | eng-000 | unidirectional flow |
| English | eng-000 | uniflow |
| русский | rus-000 | однопроходный |
| русский | rus-000 | проходной |