Traditional statues were most carved in wood or stone or moulded in clay and could hardly ever involve with complicated machining or casting. 传统雕塑因为大多以泥塑木胎工艺和小型木石雕刻为主,而不太会涉及到复杂的机械、铸造等加工制作工艺。
The Ni ( or Cu) covered graphite was added to melting aluminium by vortical stirring, and the bearing was moulded by an extrusion casting process ( or liquid die forging). 作者是以铜包或镍包石墨的形式,藉旋涡搅拌将石墨加入熔融的液态铝中,并采用挤压铸造法(液态模锻)制备铝&石墨复合自润滑轴承的。
An unsaturated polyester resin was synthesized from dicyclopentadiene, maleic acid and ethylene glycol. This resin can be moulded by casting and also can be hardened in air. 用二环戊二烯,顺丁烯二酸和乙二醇合成不饱和聚酯,这种不饱和聚酯既可浇铸,也可以在空气中固化。