“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	Daily operation plan of railway transportation enterprises daily peaking daily penalty daily public relations daily range daily rate daily regulation computation for hydropower station daily regulation pumped storage power station daily rhythm daily runoff Daily Sun Daily Times daily training plan daimai Daimao Shanmai Dai Mian Dai Miao Daimiao Temple Dai Mingshi Dai Mingshi's Nanshan Collection case Dai Mingyue Dai music daimyo oak Dai opera Dai Opera Protect and Performance Center of the Dehong Dai and Jingpo Autonomous Prefecture

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。