When pouring molten glass onto the molten tin, the underside of the glass would also be perfectly flat.

当把玻璃液倒在锡液上时，玻璃的底面也会变得完全平整。

youdao

When pouring molten glass onto the molten tin, the underside of the glass would also be perfectly flat.

当把玻璃液倒在锡液上时，玻璃的底面也会变得完全平整。

youdao