| Subject | English | Japanese |
| tech. | diffusion coefficient by turbulent flow | 乱流拡散係数 (らんりゅう・かくさん・けいすう) |
| tech. | flow coefficient | 流量係数 (ryūryō-keisū) |
| gen. | flow coefficient of flowmeter | 流量係数 (ryūryō-keisū) |
| tech. | heat transfer coefficient of turbulent flow | 乱流熱伝達率 (らんりゅうねっでんたつりつ) |
| tech. | laminar flow heat transfer coefficient | 層流熱伝達率 (そうりゅうねっでんたつりつ) |
| tech. | theoretical flow coefficient | 理論流量係数 (りろんりゅうりょうけいすう) |