Analysis of Influence of Blading Density Degree to Charateristics of Bidrectional Tubulous Pump

叶栅稠密度对双向贯 流泵性能影响的分析

Results indicated that the microstructures of lung alveoli renal tubulous liver lobules etc which could not be seen by conventional absorption X ray method but could be revealed clearly by phase contrast imaging method . The spatial resolution reached about 20 μ m.

结果表明：相位衬 度显微成像可清晰显示肺泡、肾 小管、肝小叶等微细的组织结构，其空间分辨率可达20微米，这些在常规X射线 CT吸收 衬 度成像是看不见的。

Application of soft start up control in oil pressure device of tubulous hydropower station

软启动控制在 贯 流 式水电站油压装置中的应用

From the angle of universal application the basic living facility water pipe is first researched as the object of this paper . In this paper an ultraphonic tubulous water channel communication system based on OFDM is designed .

本文从水声通信普遍性应用的角度出发，首次选用基本生活设施&水管作为研究对象，设计了一款基于OFDM的超声 管状水信道通信系统。