景泰蓝工艺品以紫铜板、丝和其他专用材料，经过制胎、掐丝、磨光、镀金等多重工序精致而成。
Cloisonne handicrafts to copper plates, wire and other special material, the fetal system, pinched wire, polished, gold-plated fine from multiple processes.
结合中子活化分析及瓷釉研究的结果来看，这种改变应是因其制瓷原料或胎料配方发生变化引起的。
Combined with the results of INAA and glaze study, this change in elemental composition should be caused by the change in porcelain raw materials or body-making crafts.
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