“sex ratio at birth”的概念、定义、翻译、参考文献-科学参考

单词	sex ratio at birth
释义	sex ratio at birth Encyclopedia 法学生育率释 sex ratio at birth出生性别比在特定的时间和空间范围内出生时的活产男婴数与活产女婴数之比。又称出生人口性别比、第一性别比。
随便看	Gansu Lianhuashan National Nature Reserve Gansu Minqin Lianggucheng National Nature Reserve Gansu Minqin Liangucheng National Nature Reserve gansu mole Gansu Opera School Gansu operatic manuscripts of Qing Dynasty Gansu People's Radio Station Gansu Provincial Archives Gansu Provincial Library Gansu Provincial Museum Gansu Sheng Gansu Shidi Gansu Taitong-Kongtong Shan National Nature Reserve Gansu Taizi Shan National Nature Reserve Gansu Tao He National Nature Reserve Gansu Tianshui Opera Prints Gansu TV Station Gansu University of Chinese Medicine Gansu wapiti Gansu water conservancy Gansu Xiaolong Shan National Nature Reserve Gansu Xinglong Shan National Nature Reserve Gansu Yanchiwan National Nature Reserve Gansu Zhangye Heihe Wetland National Nature Reserve Ganswindt crater

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