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
随机化分级析因设计randomized fractional factorial design【统计】
分部离心分离法fractional centrifugation
分部离心分离fractional centrifuguation
【医】 间歇湿热灭菌法fractional moist heat sterilization