Then this concept was brought into the research of public communication and became one of the most important points in qualitative investigation .
后来再被引入到大众传播研究中,成为了定性研究中的一个重要观点。
Liquid fuels. qualitative investigation of sulphur in light hydrocarbons. plumbite method doctor test.
液体燃料。轻质烃中硫的定性测定。铅酸盐法博士法。
The proposed method is more accurate than the qualitative investigation such as isotopic tracer.
该方法较同位素及综合示蹤法定性分析更为精确。
Many results on deeply qualitative investigation of models of biochemical reaction mechanism have been obtained by Chinese scholars in recent ten years.