The work principle of HTG is that medium quality in oil tank is measured with the method that static pressure of bottom of oil tank is measured with pressure or differential pressure transmitter.
The experiment system for measuring silo effect is designed. The size dependence of static pressure at the bottom of a series of cylindrical granular columns is investigated using this apparatus.
设计并制作了观测静态颗粒物质筒仓效应的实验系统，应用该装置研究了筒仓效应的尺寸依赖性。
3
The static coordination degree was not coordinative from 1993 to 1994, which turned to be coordinate between 1995 and 2005, and it dropped to the bottom in 1999 with the falling down trend.