n.闭塞,密闭;
例句:
Assessment on The Density of Root Canal Obturation in Dental Film
根尖片对根充密度的评价
Relationship of Root Canal Obturation Quality with Root Canal Therapy
根管充填质量与根管治疗疗效的关系
Influence of the Trial Point on the Quality of Root Canal Obturation
试尖对根管充填质量的影响