短語(yǔ)詞組短語(yǔ)base earth station 基地地球站base earth metal promoter 堿土金屬助劑yttrium base heavy rare earth 釔基重稀土y base heavy rare earth 釔基重稀土rock base earth dam grouting 巖石地基土垻灌漿Zinc -base alloy with rare earth 鋅基earth base density 土基密度 返回 base earth