What you can do is try to maintain nitrogen balance.
你能做的就是尽量保持氮平衡。
It has been shown in a number of studies to improve nitrogen balance.
许多研究已证明这能改善氮平衡。
Try to clarificate the mechanism of negative nitrogen balance after burns.
目的：为阐明及防治烧伤后负氮平衡提供理论依据。
The negative nitrogen balance of control group was more seriously than PN group(P<0.05).
术后PN支持组的负氮平衡改善较常规补液组明显（P＜0.05）。
We studied the patients nitrogen balance, body weight and albumin in week after operation.
术后一周观察病人的氮平衡、体重血浆、白蛋白等的变化。
We studied the patients nitrogen balance, body weight and albumin in week after operation.
术后一周观察病人的氮平衡、体重血浆、白蛋白等的变化。
应用推荐