| Subject | English | Japanese |
| el. | mean noise factor of a linear two-port device | 雑音指数 線形二端子対デバイスの (zatsuon-shisū) |
| el. | mean noise factor of a linear two-port device | 平均雑音指数 線形二端子対デバイスの |
| tech. | noise insulating factor | 遮音度 (しゃおんど) |
| tech. | noise insulating factor | 遮音係数 (しゃおんけいすう) |
| el. | spot noise factor of a linear two-port device | スポット雑音指数 線形二端子対デバイスの |