单词：overlayering
(overlayer 的现在分词) n. 重迭层；覆盖物
-ing form of overlayer
n protective covering consisting, for example, of a layer of boards applied to the studs and joists of a building to strengthen it and serve as a foundation for a weatherproof exterior
n protective covering consisting, for example, of a layer of boards applied to the studs and joists of a building to strengthen it and serve as a foundation for a weatherproof exterior