modular unit可: approve互换: interchange; counterchange; ...可互换: interchangeable可交换组[比较相似并常可互换的氨基酸残基: exchange group替换组件: substitute component下载手机词典可随时随地查词查翻译关注微信公众号:chachacidian,回复:可互换组件,即可在微信中查询翻译