30t相关论文
介绍了大同电力机车有限责任公司研制的30 t轴重交流传动货运电力机车的主要技术参数,并从电气系统、机械系统和空气制动系统等方......
期刊
试验14Cr1Mo钢(/%:0.12C,0.57Si,0.48Mn,0.003P,0.001S,1.20Cr,0.42Mo,0.01V,0.001Nb,0.017A1,0.003As,0.001 Sb,0.002Sn)64 mm×......
门式起重机作为桥架型起重机的一种,主要是在水平桥架上设置两个支腿形成门架形状。在仓库、港口码头等领域应用十分广泛。但很多......