Based on the engineering practice analysis is made on the performance, advantages and disadvantages of this new-type construction water tube "PP-R", and provided the solutions as well.
从工程实际出发，分析了新型建筑水管PP—R管的性能、优点和缺点，根据实践经验对使用中可能出现的问题给予细致地分析，指出解决问题方法。
Design and analysis of the microstrip antenna to the engineering practice have offered reference.
为工程实际中微带天线的设计与分析提供了参考。
Based on engineering practice and theoretical analysis, the causes of these problems have been studied and the corresponding solutions have been introduced.
基于工程实践和理论分析，研究了这些问题产生的原因并提出了相应的解决方法。
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