蛙片纲：鞭毛门(Mastigophora)蛙片亚门(Opalinata)寄生性纤毛原生动物的一个纲，具有该亚门的特点，只有一个目，即蛙片亚目(Opalinida)- counterele ctrophoresis
- counterextension
- counterimmunoele ctrophoresis
- counterin cision
- counterinvestment
- counterirritant
- counterirritation
- counteropening
- counterphobia
- counterphobi c
- counterpoison
- counterpulsation
- counterpun cture
- counterstain
- countersuggestion
- countertra ction
- countertransferen ce
- countertransport
- coup
- couple
- coupling
- courbature
- Cournand
- Courvoisier's law
- Courvoisier-Terrier syndrome