invex不变凸INVabbr.发明者(=Inventor)abbr.反相器(=Inverter)abbr.体外授精(=in vitro fertilization)involute gear contour渐开线齿廓invaginatio embolicus内折式内陷invulnerable argument无可反驳的论点inversus epiblepharon倒向睑赘皮Invigorative function激励作用involutional delusion更年期妄想症involution depression更年期抑郁Involutional hysteria更年期歇斯底里invariance properties不变性invivobiodistribution生物分布