Before 3d printing, this would have been an impossible shape to cast or weld.

3d打印之前，这将是一个不可能的形状，以铸造或焊接。

youdao

Before 3d printing, this would have been an impossible shape to cast or weld.

3d打印之前，这将是一个不可能的形状，以铸造或焊接。

youdao