比: 2变换: vary; alternate; commutation ...方差比: f ratio; variance ration; varianceratio方差比分布: variance ratio distribution; variance-ratio distribution方差比检定: variance ratio test方差比检验: variance ratio test方差比例: variance proportion方差比率: variance ratio协方差比例: covariance proportion最小方差比: least variance ratio传动比变换: gearing change对比变换: contrast variation方差比率检验: variance ratio test电压比变换器: voltage comparison converter联合方差比检验: simultaneous variance ratio test未解释的方差比: unexplained variance ratio传动比变换装置: gain changer液压比变换装置: hydraulic ratio changer飞行员操纵的传动比变换: pilot-operated gear change人工操纵的传动比变换: manual gear change俯仰操纵传动比变换器电门: pitch mechanical advantage switch方差: dispersion; mean square deviation; variance差比数: tidal difference潮差比: ratio of ranges; ratio of tidal ranges反差比: contrast ratio
