On the basis of investigation on the characteristics of section shape and analysis of physics and chemistry qualities of soil in Double Island and Sanake Island, we make tie conclusion that the soil in both is lands has clear characteristics of broun earth, and belongs to zonal earth--broun forest earth,which is made up of quartiste.

This paper mainly discusses a micromachining technology used during the fabrication of the twin isle structure polysilicon pressure sensor.

Research on dynamic response of twin-island and five-beam typed micro acceleration sensor;

Therefore, taking QingDao ShuangXing as sample, and using the method of data envelopment analysis ( DEA ) , this paper evaluated the efficiency of listed corporations making business portfolio transformation from single - sample vision angle.