Rough and open structure for soft and adhesive sticky work piece to grind.
软而且粘的工件加工时用粗松的组织。
Before faceting of the largest piece began, work was started on the 14 fragments that had been sawn from the rough stone.
在打磨最大一块石头之前，最终的职业是将14个碎片从原石上锯下来。
Before faceting of the largest piece began, work was started on the 14 fragments that had been sawn from the rough stone.
在打磨最大一块石头之前，最终的职业是将14个碎片从原石上锯下来。
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