词汇	secondary X-ray
释义	secondary X-ray 次级X射线
随便看	management engineer management engineering management engineering agency management engineering company management engineering firms Management Engineering Inspection management engineering office Management Engineering Plan management engineering program Management Engineering Services Branch management engineering squadron management engineering system Management Engineering Team management english management enhancement management enterprise management entity Management entity-Physical layer primitive LT management entrenchment hypothesis management entropy management entropy value management environment management equilibrium Management equipment management error