为烤箱材料做准备：剪刀，胶浆，纸皮箱胶带，铝箔片，箱子，旧报纸，铝碗，玻璃，钢丝，米和水等材料。
Materials for the oven: scissors, mortar, carton boxes, tape, aluminum foil film, boxes, old newspapers, aluminum bowls, glass, steel, rice and water and other material.
介绍一种用机械套装的热顶代替传统的手工制作的喇叭碗或硅酸铝纤维套的结晶器。
A new kind of hot top which can replace the conventional hot top used for hot top level pour casting is introduced.
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