方法：利用浓氨水喷雾法，枸橼酸喷雾引咳法，毛细玻管引痰法及采用观察小鸭气管纤毛运动的方法来研究信宁咳糖浆在镇咳、祛痰方面的药理作用。
Methods: Observing the incubative period and the times of cough induced by ammonia liquor or citric acid phlegm displacement of rat, the tracheal ciliary movement of duck.
刚性烧结微孔管由于有一定的壁厚，毛细孔道的深层也可起明显的过滤作用。
Because rigid sintered microporous tube have certain wall thickness, and the deepness of pores can also have apparent filtering effect.
刚性烧结微孔管由于有一定的壁厚，毛细孔道的深层也可起明显的过滤作用。
Because rigid sintered microporous tube have certain wall thickness, and the deepness of pores can also have apparent filtering effect.
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