ratio set比率装置
ration.比率;比例
ratio of stress change应力突变率
Ratio of flesh content含肉率
ratio of roll diameter辊径比
Ratio of fertilization施肥比例
ratio-type telemeter比例式遥测计
ratio of radionuelides核素比率
ratio of concentration选矿比
ratio of reinforcement配筋率
Ratio of grave to feed砾石日粮比
ratio of lens aperture透镜孔径比