单词	单频信号
释义	单频信号monochromatic signal
随便看	r/u date/time selection qualifier rudauli rudbar rudbeckia rudbeckia amplexicaulis vahl rudbeckia amplexicaulis vahl;clasping coneflower rudbeckia bicolor nutt rudbeckia bicolor nutt--pinewood coneflower rudbeckia bicolor nutt;pinewood coneflower rudbeckia;coneflower rudbeckia hirta l. rudbeckia hirta l.;black-eyed susan;yellow daisy rudbeckia laciniata l. rudbeckia laciniata l.--cut-leaf coneflower rudbeckia laciniata l.;cut-leaf coneflower rudbeckia maxima nutt rudbeckia maxima nutt--great coneflower rudbeckia maxima nutt;great coneflower rudbeckia purpurea l. rudbeckia purpurea l.--purple coneflower--echinacea purpurea moench rudbeckias rudbeckia speciosa wender non lk showy coneflower rudd rudded rudder