“babybust”的概念、定义、翻译、参考文献-科学参考

单词	babybust
释义	babybust Encyclopedia 理学人口统计学释 babybust少子化一个社会中随着人口总和生育率下降，少年儿童（0-14岁）占总人口比重降低的现象。一般将一个国家的总和生育率长时间低于维持人口长期稳定发展的更替水平（2.1），界定为少子化。
随便看	matrix-crack interaction. matrix cube root matrix data analysis matrix decomposition matrix decomposition theorem matrix deflation matrix diagonalization matrix diagram matrix differential equation matrix-diffusion transdermal patches matrix direct product matrix direct sum matrix displacement method matrix display matrix divided into blocks matrix double-sweep method Matrix Effect matrix effect matrix element matrix elements matrix elements of momentum operator in position representation matrix encoder matrix equality matrix equation matrixer

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