短語詞組短語boron n plastic 含硼塑料boron fibre reinforced plastic 硼纖維增強塑料Boron Fiber Reinforced Plastic 硼纖維增強復(fù)合材料neodymium -iron-boron plastic magnet 釹鐵硼系塑料磁體boron -in-plastic 含硼塑料 返回 boron plastic