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......

在低温条件下将生物油的不稳定组分醛酮类等通过氧化酯化联立提质,制备获得以酯、醇、醚为主要成分的稳定含氧燃料。采用Amberlyst......

Objective To evaluate the variation of sweet chemicals(sugars and betaine) in fruits of six species in genus Lycium L. i......

Poly(phenylacetylene)s bearing monosaccharide pendant groups are synthesized in high yields by [Rh(nbd)Cl]2 catalyst.The......