Through comparing the properties, the market situation and development prospects of PVC-U tubing for building drainage were analyzed in detail.
通过性能的比较，具体分析了建筑排水用PVC - U隔音管材的市场及发展前景。
The research of static voltage stability in power system is based on the analyzing the Q-U characteristic curves of load and provision ends with comparing them in this thesis.
本文对于静态电压稳定问题的研究是基于Q -U曲线分析的方法进行的，利用负荷侧与供电侧q - U曲线斜率的比较来分析系统的静态电压稳定性。
By Comparing between China and the U. s firms, there are differences in many aspects, such as business environment, regulation of law and the ownership structure.
我国的上市公司与美国的公众公司相比，在外部环境、监管的法律和股权结构等方面都存在着较大的差异。
By Comparing between China and the U. s firms, there are differences in many aspects, such as business environment, regulation of law and the ownership structure.
我国的上市公司与美国的公众公司相比，在外部环境、监管的法律和股权结构等方面都存在着较大的差异。
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