..............page:100-105
Tech-economic analysis on vibratory subsoiler
wang xue-yan~(1; 2); lu li-qun; bi jin-de~4 (1.school of engineering; china agricultural university; beijing 100008; china; 2.zibo vocational college; zibo 255013; china; 3. division of equipment management; shandong university of technology; zibo 255049; china; 4. zichuan agricultural machinery research institute; zibo 255000; china)
..............page:38-41
Experimental study on plug-seedling lining-up fit
geng duan-yang~1; zhang tie-zhong~2 (1.school of light industry and agricultural engineering; shandong university of technology; zibo 255049; china; 2.china agicultural university; beijing 100008; china)
..............page:42-45
..............page:106-110