“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	variable DB white dwarfs variable density liquid method variable-density sound track variable design variable-directions method variable displacement variable domain variable endpoint variable-free expression variable frequency AC electrical power generating system variable-frequency Motor variable-gain amplifier variable gene variable-geometry turbine stator Variable Geometry Turbocharge and Exhaust Gas Re-circulation Control variable geometry turbocharger variable gradient method variable-grid method variable index variable inductance variable infrared object variable inlet variable intake and exhaust system variable intake system variable intersection

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