动词位于或存在于（某物）之下（ underlie的过去式 ）; 构成…的基础（或起因），引起
名词衬垫物
1. 底層：所谓同心圆就是将普通的小区分为两个区域:外层及内层,又称顶层(Overlay)和底层(Underlay). 外层的覆盖范围是传统的蜂窝小区,而内层的覆盖范围主要集中在基站附近. 外层和内层的区别除覆盖范围不同外, 它们频率复用系数也不同的,
2. underlay的意思
2. 垫物,衬层：under frame 底架,底框 | underlay 垫物,衬层 | underlayer 底层
3. 垫起：underside 下面、下側 | underlay 垫起 | underwrite 签在...下、认购
4. 公共查询·英语单词
4. 倾斜;下伏层;下伏的：underheated 加热不足的 | underlay 倾斜;下伏层;下伏的 | underlayer 下层
1. 地毯衬垫
Underlay is a layer of thick material that you place between a carpet and the floor to protect the carpet and make it feel warmer and softer.
underlay的意思
2.
noun
1. a pad placed under a carpet
Synonym: carpet padrug padunderlayment
verb
1. provide with a base, support, lining, or backing
e.g. underlay the boards with joists
2. put (something) under or beneath
e.g. They underlaid the shingles with roofing paper
3. raise or support (the level of printing) by inserting a piece of paper or cardboard under the type
e.g. underlay the plate