Recently people are active in the study on high performance modification techniques for PP. Some very important modification techniques for PP are introduced in this paper.
有关聚丙烯的高性能化技术的研究近年来十分活跃，本文仅介绍其中几种典型的改性技术，供大家参考。
U. S. student performance in class is very active, and teachers of the problem as easy as chatting with friends, participation in the classroom so they usually are out of the appraisal.
美国学生在课堂上表现的非常活跃，和老师探讨问题就像与朋友聊天一样轻松，因此他们在课堂参与度的考评上通常都是满分。
The problem of calibration of aperture distribution and diagnoses of faults is very important to assure the proper performance of the radar in modern large active phased array radar systems.
现代大型相控阵雷达天线系统的口径分布和故障诊断对保证雷达的正确性能非常重要。
Of brass, we all know that the copper in chemical and active sort order is very low, stable performance, strong corrosion resistance.
对铜管来说，我们都知道铜在化学活性排序中序位很低，性能稳定，耐腐蚀性极强。
The independence of the core staff, autonomy is very strong, this independence, autonomy, if the performance of positive work attitude, is the Traditional Subjectivity and active;
核心员工的独立性、自主性非常强，这种独立性、自主性，如果表现在工作态度上，就是较为自觉和主动；
The independence of the core staff, autonomy is very strong, this independence, autonomy, if the performance of positive work attitude, is the Traditional Subjectivity and active;
核心员工的独立性、自主性非常强，这种独立性、自主性，如果表现在工作态度上，就是较为自觉和主动；
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