单词	各个阶级
释义	各个阶级 various classes各个
随便看	metal diaphragm pump metal diaphragm tank metal diaphramtype ink head metal die metal die drawing metal dielectric metal-dielectric filter metal-dielectric interference filter metal-dielectric interferometry metal dielectric semiconductor metal dielectric waveguide metal-dielectric waveguide Metal diffraction grating metal diffusion metal diffusion by using metal diffusion metal diffusion liquid metal-dificient star metal diode metal dip brazing metal-dip brazing metal-dip mold metal directly from fused masses metal disc metal disc antenna metal disc filter