降低康明斯6BT缸盖湿砂型铸造废品率
Lower the Unqualified Rate of Comins Engine Cylinder Head Casted in Green Sand Mould
醇基涂料的选择及其在湿砂型铸造斯太尔汽车制动鼓上的应用
The Selection of the Alcohol Based Coatings and the Applicating to the Brake Drum Casting for Steyr Truck by the Green Sand Mould