短語詞組短語machine hard X -ray 硬性X射線機(jī)emitted hard x -ray 硬x射線Hard X -ray microfocus 硬X微探針hard x -ray perturbation 硬x射線擾動(dòng)hard X -ray machine 硬性X射線機(jī)flare hard x -ray 耀斑硬x射線 返回 hard X ray