Research on Land Information System Based on GIS
chen jing 1; xie li-sheng2 ( 1. environmental && life science department; putian university; putian 351100; china; 2. sanjiang chemistry && industry limited corporation; putian 351100; china )
..............page:79-83
A Simple Electronic Ballast with High Power Factor
yang yi-ming1; lin zhen-heng2( 1. college of info. sci. && eng.; huaqiao university; quanzhou 362011; china; 2. electronic && information engineering department; putian university; putian 351100; china )
..............page:46-50
..............page:5-6,15
Advances in Pearl Research in China
xie yu-kan1; min zhi-yong2( 1. ocean research institute of the south china sea; chinese academy of sciences; guangzhou 510301; china; 2. environmental && life science department; putian university; putian 351100; china )
..............page:34-38
..............page:26-29,54