invarn.因钢；镍铁合金INVabbr.发明者(=Inventor)abbr.反相器(=Inverter)abbr.体外授精(=in vitro fertilization)invincibilityn.无敌；绝对不败involucellate具小总苞的inv inversion倒位invetory card存货卡involute line渐开线involuntarilyadv.不知不觉地；无意识地involutionaryadj.纠缠的Involute type渐开型inviolabilityn.神圣；不可侵犯involucrellum包顶组织