lactam group基: base; foundation内酰胺: lactam; lactan酰胺基: acylamino group; acylamino-penicillins; amido group; amidogen; carboxyamide groupβ-内酰胺,乙内酰胺: beta-lactamΒ-内酰胺类: beta-lactam antibiotic下载手机词典可随时随地查词查翻译