| 1 | ROLLING MILL SYSTEM DYNAMIC DESIGN显示文摘It is studied how the aluminum foil chatter mark is produced and controlled The stableness of hydraulic AGC system,fluid vibration of capsule system,and electromechanical coupling of AC/AC VVVF system and de coupling are also studied It is shown that rolling mill design should go to system dynamic design from traditional design The framed drawing of system dynamic design program is presented. | Li Mouwei, Liu Hongfei, Zhang Yang, Zhao Yongzhong (College of Mechanical Engineering,University of Science and Technology Beijing) Wany Yide, Li Aiqun, Pei Quanren (Taiyuan Iron and Steel(Group)Ltd.) Zhao Liangmo, Zou Lihe, Zhou Binsheng (Northeast Light | 2001 | Chinese Journal of Mechanical Engineering2001，14，4： | 0 |
| 2 | Production Performance of Different Generations of Muchuan Blackbone Chicken显示文摘In order to formulate feasible conservation measures and develop and utilize Muchuan black-bone chicken rationally,two generations of Muchuan black-bone chicken were bred,and their production performance and slaughter traits( at the age of 300 d) were compared. The results showed that the reproductive performance,slaughter performance and body size of the Muchuan black-bone chicken of Generation 1( G_1)were all improved compared with those of the Generation 0( G_0)( P <0. 05). At the age of 300 d,the live weight,carcass weight,and leg muscle weight of the G_1 were significantly higher than those of the G_0( P <0. 05); and the chest width of the cocks of the G_1 was significantly higher than that of the G_0( P <0. 05). It suggests that after rigorous selection and utilization of modern poultry breeding techniques,the reproductive performance,slaughter performance and survival rate of Muchuan black-bone chicken can be improved significantly. | Mohan QIU Zengrong ZHANG Xiaosong JIANG Huarui DU Qingyun LI Chunlin YU Xia XIONG Lihe ZOU Chaowu YANG | 2018 | Asian Agricultural Research2018，10，8： | 0 |
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