層,階層;鋪設者,敷設機;瞄準手;生蛋的雞 ; (通過將通信工作分成不同層次,使各種機器不同的傳輸媒介能夠綜合在同一個網絡上,彼此能夠互相溝通)
lay·er /ˈleɚ, ˈlɛ(ə)r/ 名詞
1. One who, or that which, lays.
2. That which is laid; a stratum; a bed; one thickness, course, or fold laid over another; as, a layer of clay or of sand in the earth; a layer of bricks, or of plaster; the layers of an onion.
3. A shoot or twig of a plant, not detached from the stock, laid under ground for growth or propagation.
4. An artificial oyster bed.
n 1: single thickness of usually some homogeneous substance;
"slices of hard-boiled egg on a bed of spinach" [syn: bed]
2: a relatively thin sheetlike expanse or region lying over or
3: an abstract place usually conceived as having depth; "a good
actor communicates on several levels"; "a simile has at
least two layers of meaning"; "the mind functions on many
strata simultaneously" [syn: level, stratum]
4: a hen that lays eggs
5: thin structure composed of a single thickness of cells
v : make or form a layer; "layer the different colored sands"