relative job相对作业relativeadj.相对的；比较的；相关的n.亲戚；[语]关系词relative efficiency inspection相对效率检验relative quantitative RT-PCR相对定量RT-PCRrelative competitive advantage显性比较优势指数relative molecular weight mass相对分子质量relative competency evaluation相对竞争力评价relative density determination相对密度测定relative germination potential相对发芽势relative degree of development相对发育程度relative distribution function相对分布函数relative clause transformation关系子句转换

1. The analysis indicates that micropacking silica fume works to the density and relative density of RPC, and its pozzolanic effect helps the strength of RPC.
   硅灰的微填充效应有利于提高活性粉末混凝土的密度和相对密度，而火山灰效应有利于提高其强度。