[目的]比较青海牦牛、犏牛、黄牛的体尺数据，提出牦牛改良选育的建议。[方法]本研究在青海省海西州共测定了326头牛的体尺数据，按照......

该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生......

The H19 gene,which is imprinted with preferential expression from the maternal allele,was one of the first identified im......

用Combi Foss FT+乳成分、体细胞联用仪测定放牧条件下的中甸牦牛、迪庆黄牛和犏牛的乳的主要营养成分,并与同期舍饲条件下的荷斯......

The DAZL gene plays an important role in gametogenesis.Microdeletion and mutation of this gene has been frequently assoc......