exchange group可交换: commutative组: group可交换: [数学] commutative◇可交换矩阵 commutative matrix; 可交换性 interchangeability; commutativity可交换组[比较相似并常可互换的氨基酸残基: exchange group交换组分: exchange component; exchange operator下载手机词典可随时随地查词查翻译