With the increasing demand of industry for oil in transportation aviation etc the tank semi-trailer plays an important role as an carrier in oil transportation and the demand for large-scale tank semi-trailer is increasing .

随着我国运输、航空等行业对油的需求量越来越大， 油罐 半 挂车作为运载各种油的运输工具发挥着重要作用，大型油罐半挂车的需求量也日益增加。

The liquid tank semi-trailer was a complex load system . It stood all kinds of loads from the road and the loading liquids .

半 挂液 罐车是复杂的承载结构系统，承受着来自道路及装载的液体载荷作用。

However there is unreasonable design in local structure of oil tank semi-trailer in actual use .

然而，在实际使用中会 发现 油罐 半 挂车的一些局部结构设计存在不合理。

All above provide a basis for further research for aluminum tank semi-trailer .

为铝合金 油罐 半 挂车的进一步研究奠定了基础。

Tank semi-trailer is a special vehicle which is used to carry oil .

油罐 半 挂车，是用来装运油类 物品的专用 罐 式车辆。