tknCOCA¹⁵²⁶⁴⁵ 基本例句 =total kjeldahl nitrogen 总克氏氮 Results:Antitussive effect on guinea pig models induced by citric acid were found in the three groups and the effect in TKN group was about3.3 times of that in either of the latter two groups. 结果痰咳宁片组、无麻组、麻黄碱组均能抑制枸橼酸引起的豚鼠咳嗽反射,痰咳宁片组的作用强度是无麻组或麻黄碱组的3.3倍。 cnki