羽毛被的厚度填满了压缩绝缘材料的某种物品的厚度，如尼龙被 The thickness of an item, such as a down comforter, that is filled with compressible insulating material.
密耳长度单位，等于一英寸的千分之一（10－3）（0。0254毫米），如用来标明电线的直径或按页出售的材料的厚度 A unit of length equal to one thousandth(10-3) of an inch(0.0254 millimeter), used, for example, to specify the diameter of wire or the thickness of materials sold in sheets.
所以真珠质的厚度就像脸上化妆品，不久就会磨薄了。 As a result, nacre thickness is sometimes just a cosmetic layer that can wear thin over time.
这冰的厚度能禁得住在上边滑冰吗？ Is the ice thick enough for skating?