“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	explicit representation explicit scheme explicit solution explicit solvation models explicit solvent model explicit symmetry breaking explicit water model explode exploded pile exploder exploding galaxy exploding granule exploding prominence exploding star exploit exploitable groundwater exploitation exploitation and utilization of marine algae resources exploitation and utilization of marine biological resources exploitation and utilization of sea water chemical resources exploitation and utilization of sea water resources exploitation extent of fisheries resources exploitation method by carbon dioxide-methane replacement exploitation method by depressurization exploitation method by inhibitor injection

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