利用稀土改善富铁铝合金组织和性能的研究 "The cylinder head is usually cast in one piece from iron, from iron alloyed with other metals, or from aluminum alloy." 气缸盖通常由铁、铁合金或铝合金铸成。 Spectrophotometric Determination of Fe(Ⅲ) in Aluminum and Aluminum Alloys with Alizarin Yellow GG as Color Reagent