Many PAHs are carcinogenic or are suspected to be carcinogenic.其主要来源于煤的不完全燃烧,也有相当部分来源于汽车尾气的排放.The both carcinogenic factors were investigated on its dose - response ralationships.研究上述两种致癌因子的剂量 - 效应相关模式.Some industrial ch...

adj.致癌物（质）的...

carcinogenic的音标：carcinogenic的英式发音音标为：[ˌkɑ:sɪnə'dʒenɪk]carcinogenic的美式发音音标为：[ˌkɑrsɪnə'dʒenɪk]...