observation group

• 观察组

observation group的用法和样例：

例句

1. The observation group atomizes to breathe Chuan Le Ning in the foundation.
   观察组在此基础上雾化吸入喘乐宁。
2. The observing group, consisting of 34 patients, was administered captopril in addition to routine treatment which was applied to the control group.
   心脏彩超等证实有心脏增大的慢性心力衰竭病人分为观察组和对照组两组。