n.厚度；濃度；層

The beam has a thickness of 3 inches. 這根梁厚3英寸。

The hole size is limited by the ring thickness. 螺孔的大小受套圈厚度的限制。

The film thickness cannot exceed a maximum value which depends on the Ge content. 薄膜的膜厚不可以超過由鍺濃度所決定的最大數(shù)值。

I wrapped the ice cream in three thicknesses of newspaper to keep it cool. 我用三層報(bào)紙包裹冰淇淋使其不致變熱融化。