等离子切割，由于融口上面大，下面小，切口断面总有一定斜度，不可能象火焰切割一样垂直，这是一世界性难题。
Plasma cutting, due to melt, the small mouth above, there is always a downward section incision, don't like probably as vertical flame cutting, this is a worldwide problem.
采用一般的脉冲电源对磁钢进行电火花线切割加工，不可避免地将引起充磁，造成排屑困难。
When the method of general pulse power of wire cut EDM is used, magnetic steel has magnetic property inevitably and it is difficult to evacuate.
古老的切割和雕刻技术需要重新学习，但最富挑战性的是揭开18世纪琥珀染色之谜，这是一种为琥珀厅锦上添花所必不可少的工艺。
Old methods of cutting and carving had to be relearned, but most challenging was unlocking the 18th-century mystery of dyeing amber, a process essential to enhancing the Amber Room' s beauty.
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