The color characteristics of colored PE in different radiation dosages, which is colored with azos, phthalocyanines, inorganic pigments respectively, has been studied in this paper.

试验和研究了塑料着色用常用颜料偶氮类，酞菁类及无机颜料对PE着色后的辐照特性。

The characteristics of happy PE determine that it is the basis of lifelong PE. Moreover, corresponding requirements have been attached to teachers.

快乐体育自身特点决定了它是终身体育的基础，另外，快乐体育对教师也提出了相应的要求。

Objective To improve the diagnostic and therapeutic level through analysis of clinical characteristics of pulmonary embolism (PE).

目的通过对肺栓塞的临床特点分析提高对PE的诊断治疗水平。