Aiming at above special papulation, this investigation is about smoking knowledge, smoking attitude, smoking practice, and smoking status. 本研究针对这一特殊人群,研究其吸烟者的行为心理因素。
Objective by investigating papulation density and breeding characters of dengue vectors in Fuzhou Changle International Airport to prevent and control dengue fever. 摘要目的调查长乐国际机场登革热媒介种群密度,预防和控制登革热暴发流行。
The incidence of congenital bilateral hearing loss in the screened papulation was 2.42 ‰ and that required hearing aid was 1.3 ‰. 双侧先天性听力损失的发病率为2.42‰。因双侧听力损失需要佩戴助听器的为1.3‰。
The concept of "action scope expansion in succession" was advanced in this paper according to the relationship between the distributing range of population root system and the dynamics of papulation density. 根据种群根系分布范围与种群密度变化的关联,本文提出恢复演替的作用域扩展概念。