分次的；分部的fractional
钠排泄分数fractional excretion of sodium
分步结晶fractional crystallization
分段诊刮fractional curettage
滤过钠排泄分数fractional excretion of filtrated sodium
【化】 分步结晶; 分级结晶fractional crystallization
随机化分级析因设计randomized fractional factorial design【统计】
间段灭菌fractional sterilization