词汇	永磁话筒
释义	永磁话筒电pm speaker
随便看	composite solid composite solid acid composite solid acid catalyst composite solid polymer electrolyte composite solid propellant Composite solid propellants composite solid super acid composite soluble coal-water separation agent composite solution composite solvent Composite sorbent composite sound composite space composite space truss composite spar composite spasticity scale composite species composite spectrum composite spectrum binary composite-spectrum binary composite sphere composite spheres composite spherules composite spine girder composite spinneret