chemical fit化学配合chemicaladj.化学的n.药品；化学物chemical decompression化学减压Chemical Agent Monitor化学剂监测器Chemical waste-water化学工业废水chemical-feed system加药系统chemical incident unit化学事故处理车chemical concentration化学浓度Chemical shifts in NMR核磁共振化学位移Chemical Agents Tracer化学试剂追踪器Chemical Pretreatrnent化学预处理Chemical valence state化学价态