| English | eng-000 |
| RCC | |
| 普通话 | cmn-000 | 渣油催化裂化 |
| English | eng-000 | Routing Control Center |
| English | eng-000 | radio common carrier |
| English | eng-000 | rescue coordination center |
| English | eng-000 | roller compacted concrete |
| 日本語 | jpn-000 | 赤血球濃厚液 |
| македонски | mkd-000 | РЦЦ |
| русский | rus-000 | дистанционная податливость |
| русский | rus-000 | устройство дистанционной податливости |