invex不变凸
INVabbr.发明者(=Inventor)abbr.反相器(=Inverter)abbr.体外授精(=in vitro fertilization)
invocatory scriptures祈愿
involute spline gauge渐开线花键量规
Involute gear profile渐开线齿形
Invagination of colon结肠套叠
Involute teeth spline渐开线齿外花键
Invation of character文字创制
involution similarity乘方相似度
invariability in form形式不变性
involute gear machine渐开线齿轮加工机
involutional syndrome更年期综合征