- [网络] 无效
- nulligravidae: [网络] 无性系
- nullifying unswept space: [电学] 无效未扫描空间
- nulligravidas: [妇产] 未孕妇 ; (nulligravida 的复数)
- nullifying: v. 使抵消( nullify的现在分词 ); 使无效
- nulligravidities: 《英文msh词典》Nulligravidities ; [入口词] Nulligravidities ; [主题词] Gravidity ; [英文释义] The number of pregnancies,complete or incomplete,experienced by a female. It is different from PARITY,which is the number of offspring borne. (From Stedman,26th ed)
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