..............page:105-107
..............page:108-112
..............page:101-104
..............page:98-100
..............page:6-8,24
Induction Motor Direct Torque Control System Adopting DSP
liu zi jian 1; chen te fang 1; jiang xin hua 1; ding xue gong 2 (1 information engineering college; changsha railway university; changsha 410075; china; 2 changsha jinxia development & construction corporation; changsha 410006; china)
..............page:36-40
..............page:41-43,94
The Fractal Study of Structure of Expansive Soil
fu he lin 1; li liang 1; li lei 2 (1 civil architectural engineering college; changsha railway university; changsha 410075; china; 2 the third design institute; aviation industry company; changsha 410009; china)
..............page:1-5