To study the effects of the super thin pearl powder with different doses on sleep improvement.
研究不同剂量超细珍珠粉对改善睡眠的影响。
The clinical symptoms and gross lesions were similar in birds infected with different doses of oocysts.
结果显示，不同剂量感染引起的临床症状和各病死鹅的肉眼病变基本相似。
Methods 42 syphilitics were put into two groups and treated with different doses for 10 days of muscular injection.
方法42例早期梅毒患者分两组行不同剂量的头孢曲松钠肌注10天。
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