单词	印章學家
释义	印章學家1. sigillographer
随便看	long period constituent long-period delayed long-period delayed neutron long-period delayed--neutron long period fiber grating long period fiber grating pair long period filter long period grating long-period gravity wave long periodicity long period optical grating long-period oscillation long period perturbation long period perturbations long-period reverberation long -period seismograph long period seismograph long-period seismometer long period superlattice｛=lps｝ long period term long period tide long period variable long-period variable star long period wave long-period wave