displacement type meter

Combined with the features of expansive soil cutting slope and the slope treating measures,surface water protection,nature changing plus,plants protection which are used in the section of K126+320～K126+660 of Zheng-Shi freeway,it explores the preventive measures to expansive soil cutting slope,which is a reference for similar projects.

针对膨胀土路堑边坡的特点,结合郑石高速公路K126+320~K126+660段"表水防护+改性处理+植被护坡"的边坡处理施工方案,探讨膨胀土路堑边坡的防治措施,可供同类工程参考借鉴。

This paper offers the datum of developing positive displacement water pump, proves the mathematical model of positive displacement water pump,explains the ex- perimental result of the analog pump,lists the question of continuing research.

本文提出了研制开发容积式水泵的依据,证明了容积式水泵的数学模型,论述了模拟泵的实验结果,列出了继续研究的问题。