合成的产品三碱式硫酸铅质量符合原化工部行业标准（HG2340—1992）。
The quality of the tribasic lead sulfate synthesized can meet the enterprise standard(HG2340-1992).
目的：了解术前局部注射高三尖杉酯碱联合地塞米松对减少翼状胬肉术后复发的效果。
Objective: to study the effect of homoharringtonine and dexamethasone injection of topical pterygium before excision on the prevention of recurrence of pterygium.
三碱式的每个分子中含有三个一价碱性原子或原子团的。
Containing three univalent basic atoms or radicals per molecule. Used of a base or salt.
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