基本解释(外)套膜同根派生 英汉例句Keywords freshwater mussel;protein of mantellum;amino acid;elements; 淡水蚌;外套膜蛋白;氨基酸;元素;ANALYSIS OF PROTEIN, AMINO ACIDS AND SOME ELEMENTS IN MANTELLUM OF FOUR KINDS OF FRESHWATER MUSSEL 几种淡水蚌外套膜蛋白质氨基酸组成及部分元素分析