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药剂学重点 药剂学英文重点整理
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当粒子用空气流输送时会撞击到一表面，假定其惯性大于其向内的拉力，粒子流则会在不同速率的空气流驱动下按不同的粒径分离。
? Grinding a drug in a mortar to reduce its particle size is termed trituration（研碎）.
? Mills and Pulverizers
? Levigation is commonly used in small-scale preparation of ointments to reduce the particle size and
grittiness of added powders.
? Mineral oil and glycerin are commonly used levigating agents.
Powders may be blended by spatulation（搅拌法）, trituration（研磨法）, sifting（过筛法）, and tumbling（滚动法）.
(1) Spatulation is blending small amounts of powders by movement of a spatula through them on a sheet of paper or an ointment tile.
Substances that form eutectic mixtures when combined include phenol, camphor, menthol, aspirin, phenyl salicylate, and other similar chemicals.
(2)Trituration may be employed both to comminute and to mix powders.
Geometric dilution method:
By this method, the potent drug is placed on an approximately equal volume of the diluent in a mortar and mixed thoroughly by trituration.
Then the second portion of diluent equal in volume to th
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