矽镁层 xīměicéng sima Definitions Defs Origin Strokes Stroke Words Sentences Sents 矽镁层 矽鎂層 xīměicéng sima (geology) silicon and magnesium layer in the earth's crust; forms the lower layer of continental crust and the main layer of oceanic crust
矽镁层 矽鎂層 xīměicéng sima (geology) silicon and magnesium layer in the earth's crust; forms the lower layer of continental crust and the main layer of oceanic crust
