nfdnofixeddate无固定日期;non..NFDANationalFastenerDist..NFDSNationalFinancialDat..nfdmnon-fat dry milk 脱脂奶粉NFDMANational Funeral Directors and Morticians Association 全国丧葬承办人和殡仪业者协会NFDRSNational Fire Danger Rating System 国家火灾危险等级系统NFD[医]非反流性消化不良NfdNewfoundland 纽芬兰(岛)(加拿大一省)