畜牧与饲料科学 ›› 2010, Vol. 31 ›› Issue (10): 81-81.doi: 10.12160/j.issn.1672-5190.2010.10.042
王永刚[1] 施洋[2]
WANG Yong-gang,SHI Yang(1.Department of Rural Engineering and Technology,Hebi Vocational and Technical College,Hebi 458030,China;2.Hebi Technical School,Hebi 458030,China)