| Subject | English | Japanese |
| phys. | fundamental system of function | 基本関数系 (kihon-kansūkei) |
| tech. | system function | 系関数 (けいかんすう) |
| comp., MS | system functions | システム関数 (A set of built-in functions that perform operations on and return the information about values, objects, and settings in SQL Server) |
| phys. | system of functions | 関数系 (かんすうけい) |
| math. | system of orthogonal functions | 直交系 (ちょっこうけい) |
| math. | system of orthogonal functions | 直交関数系 (chokkō-kansūkei) |
| comp. | n systems management function | システム管理機能 |