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| 成績係数 (せいせき・けいすう) Engineering and Science Technical Dictionary (James Friend) ; 動作係数 (dōsa-keisū) Engineering and Science Technical Dictionary (James Friend) | |||
| 性能係数 (seinō-keisū) | |||
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| 成績係数 (せいせき・けいすう) Engineering and Science Technical Dictionary (James Friend) ; 動作係数 (dōsa-keisū) Engineering and Science Technical Dictionary (James Friend) | |||
| 性能係数 (seinō-keisū) | |||
