医学翻译求助,泌尿外科（1）This relationship held true when the 2 phases

医学翻译求助,泌尿外科
（1）This relationship held true when the 2 phases were normalized for urinary volume derived from the placebo phase.这句话该怎么翻译?（2）An adjusted RSR for calcium oxalate was calculated by normalizing the urine volume of the AA group to the urine volume of the placebo group.这里的AA是指抗坏血酸,RSR是指相对饱和比.主要这句话是大致意思怎么理解.求大臣!