| English | eng-000 |
| return flue boiler | |
| 普通话 | cmn-000 | 回焰锅炉 |
| English | eng-000 | back-flame boiler |
| English | eng-000 | return flame boiler |
| English | eng-000 | return tube boiler |
| English | eng-000 | return tubular boiler |
| русский | rus-000 | котёл с использованием пламени отходящих газов |