Please confirm the diameter of the pipes before we place the order with the supplier.

在向供應商下單之前，請先確認管子的直徑。

The shipping label must list the package's diameter if the container is cylindrical.

如果容器是圓柱形的，運送標籤上必須註明包裹的直徑。

Our engineers increased the diameter of the conference room's ceiling lights to improve brightness.

我們的工程師加大了會議室天花板燈具的直徑，以提升亮度。