方法每月中旬由护士用同一个湿度表测量同一类型恒温箱的相对湿度并进行登记。
Methods the relative humidity in the incubators of same type were measured by nurses with the same hygrometer and recorded in the middle ten days of each month.
方法每月中旬由护士用同一个湿度表测量同一类型恒温箱的相对湿度并进行登记。
Methods the relative humidity in the incubators of same type were measured by nurses with the same hygrometer and recorded in the middle ten days of each month.
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