“number of person-days”的概念、定义、翻译、参考文献-科学参考

单词	number of person-days
释义	number of person-days Encyclopedia 工学膳食调查释 number of person-days人日数包括总人日数和个人人日数，是指以被调查对象的一日三餐为标准折合的用餐天数，将每人每日的三餐定义为一个人日。
随便看	toroidal equilibrium toroidal field toroidal function toroidal geometry toroidal geometry configuration toroidal group toroidal harmonic toroidal Lie algebra toroidal magnetic bi-cusp toroidal magnetic cusp toroidal magnetic field toroidal manifold toroidal neighborhood toroidal orbifold toroidal oscillation toroidal pinch toroidal polyhedron toroidal structure toroidal subgroup toroidal variety toroid group Toronto Toronto International Film Festival Toronto school Toronto Star

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