“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	flame image diagnostic technology flame-inhibiting chemicals flame insulating device flame ionization detector flame ionization detector (FID) flame kernel initiation flamelet-like combustion model flame lily flamenco Flame Nebula flame nozzle Flame of Revenge flameout protection device for furnace Flame Pattern Earthenware flame photometer flame photometric detector flame photometric detector (FPD) flame photometric method flame photometry flame prevention of electrical equipment flame-projector flameproof flame propagation flame quenching flame quenching distance

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