Read Edit View history 矽铝层 xīlǚcéng sial Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 矽铝层/矽鋁層 · xīlǚcéng · sial 2026/03/04 矽铝层 / 矽鋁層 xīlǚcéng sial the upper layer of the Earth's crust, rich in silica and alumina 地壳的上层主要由矽铝层构成。 created sense Mar 4, 2026, 02:25 AM