“一级预防”的概念、定义、翻译、参考文献-科学参考

单词	一级预防
释义	一级预防 Encyclopedia 医学一级预防释 primary prevention一级预防在疾病的易感期针对病因或危险因素开展的预防活动。又称病因预防。理学生活方式疾病释 primary prevention一级预防疾病尚未发生时针对病因采取的措施。又称病因预防。
随便看	back-propagation back propagation algorithm back-propagation algorithm back propagation network back propagation neural network back-propagation neural network back propagation of errors network back propagation，BP back reaction backreflection back reflective material backrope backsaw backscatter backscatter cross-section back scattered electron backscattered electron backscattered light backscatterer back scattering back-scattering backscattering backscattering analysis backscattering analysis, BSA back scattering-channeling effect

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