“perimenstral bleeding from nose or mouth，retrograde menstruation”的概念、定义、翻译、参考文献-科学参考

单词	perimenstral bleeding from nose or mouth，retrograde menstruation
释义	perimenstral bleeding from nose or mouth，retrograde menstruation Encyclopedia 医学﹝妇科病证﹞释 perimenstral bleeding from nose or mouth，retrograde menstruation倒经以经行前后或正值经期，出现周期性吐血或衄血为特征的病证。常伴有经量减少，又称经行吐衄、逆经。
随便看	halftone halftone image halftone original half-trace half-trajectory half-turn half-value discharge time half-value discharging time half value layer half-value layer half-value layer (HVL) half-wave antenna half-wave dipole half-wave filter half wave loss half-wave loss half-wave oscillator half wave plate half-wave plate half wave potential half-wave potential half-wave rectifier half-wave reflection half wave voltage half-wave voltage

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。