..............page:101-103
Study on Small Errors of Differential Form of Ohm's Law
li guan cheng 1; lu dian qing 1; li ming 1; shao li tang 1; yan xi jie 2 (1.dept. of basic science; huaihai institute of technology; lianyungang; jiangsu 222005; china; 2.dept. of physics; tonghua teachers college; tonghua; jilin 134002; china)
..............page:32-34
..............page:11-17,104
Evaluation Method of the Postponable Coal Mining Option
shen hong 1; li ping 2; chen xiang guo 1; liu yong 3; luo yan 1 (shandong university of science and technology:1.college of economics and management; 2.college of geo info science & engg; 3.college of civil engg and architecture; taian 271019; china)
..............page:68-70
..............page:24-25,28
..............page:53-54,59
..............page:44-46,52
..............page:84-86,93
Analysis of Assembly Line Dispatch with Petri Net
guo yu bin 1; liu bing 2; li xi ming 3 (1.dept.of computer science; liaocheng teachers college; liaocheng; shandong 252059; china; 2.computing center; sust; taian 271019; china; 3.dept. of communication engg; liaocheng teachers college; liaocheng; shandong 2520
..............page:60-63,83
..............page:97-100