实验表明，将反应后分离出尿囊素的母液循环利用一次可明显提高尿囊素的总收率。
The experimental result showed that the total yield of allantoin can be obviously increased by recycling the reaction mother solution once.
实验表明，将反应后分离出尿囊素的母液循环利用一次可明显提高尿囊素的总收率。
The experimental result showed that the total yield of allantoin can be obviously increased by recycling the reaction mother solution once.
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