quantitative PCR定量PCRquantitativeadj.数量的；定量的quantitative structure-biodegradability relationship定量结构-生物降解相关性Quantitative Discriminability of Metallographic Structure金相组织定量识别分析研究quantitative structure-activity/property relationship构效关系quantitative reverse transeriptase-polymerase chain reaction实时定量PCRQuantitative structure-enantioselectivity retention relationships定量结构-对映异构体保留关系