If N excretion is considered as maintenance requirement of weaned sika deer when they are fed protein free diet, the maintenance requirement of deer at this stage will be 4.808 g N or (4.808x6.25) g crude protein.是什么意思_If N excretion is considered as maintenance requirement of weaned sika deer when they are fed protein free diet, the maintenance requirement of deer at this stage will be 4.808 g N or (4.808x6.25) g crude protein.在线翻译_英语_读音_用法_例句