After its angles have been beveled, guaranteeing a neat fit with the case, the sapphire crystal is chemically polished on both sides.
After its angles have been beveled, guaranteeing a neat fit with the case, the sapphire crystal is chemically polished on both sides.
对镜面边缘进行斜削，以确保其与表壳的精确配合，再将两面进行化学抛光。