目的：通过对颅脑外科手术中所用开放式与密闭式无菌生理盐水的污染程度的监测，分析原因，进行对比。
Objective: to monitor and compare the pollution of open and closed sterilizing saline used in cerebral surgery so as to analyze the reasons.
目的：通过对颅脑外科手术中所用开放式与密闭式无菌生理盐水的污染程度的监测，分析原因，进行对比。
Objective: to monitor and compare the pollution of open and closed sterilizing saline used in cerebral surgery so as to analyze the reasons.
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