Iron and steel . hot - rolled products . vignole type 50 kg m rail with fish - plate . characteristics and tolerances 钢铁.热轧材.每米50kg重带鱼尾板的阔脚轨.特性和公差
The kinematics mathematic model of lifting mechanism of vehical tail - lift is built by plural vector method 摘要采用复数向量法建立了车用起重尾板起重装置运动学的数学模型，分析了该举升机构运动的特点。
Leung kow kee transportation co . , ltd , found in 1975 , is one of the government contract transportation companies . we provide local transportation services . we are always equipped with several heavy , light vehicles and vans . the quanity of goods transported by our company can reach 100 , 000 tons 梁九记运输有限公司，于1975年成立，本公司拥有多部用作货运之车辆，专营本地各种货物海陆运输及重型搬运，本公司常备拖头， 30 & 24吨吊机及尾板货车， 24吨& 5
