凹陷 形成凹面 辐板压弯 平底器皿下沉变形 大半径凹进成形
The concave surface forms a concave spoke plate, which bends the flat-bottomed vessel and causes it to sink and deform. The large radius of the concave shape is formed
以上为机器翻译结果,长、整句建议使用 人工翻译 。
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