[pə:fəˈreiʃ(ə)n]
①穿孔，穿破：穿过某处的动作，②孔：穿过某物质或其一部分的洞
习惯用语Bezold's perforation
Bezold穿孔：乳突内侧面穿孔mechanical perforation
机械性穿孔丐 ：钻或刺过某结构或面(如牙根)所形成的人工开口或洞pathologic perforation
病理性穿孔：由于病理过程在组织表面或结构中产生的开口或洞，如牙齿内吸收时- valency
- Valentine's position
- Valentin's corpuscles,ganglion(pseudoganglion)
- valerian
- valerianic acid
- valeric acid
- valethamate bromide
- valetudinarian
- valetudinarianism
- valgus
- validity
- valine
- valinemia
- Valisone
- Valium
- vallate
- vallecula
- vallecular
- Valleix's points
- Vallestril
- naphtha
- naphthalene
- naphthamine
- naphthol
- naphtholate