layer model的用法和樣例：
例句
- This layered model facilitates a good correspondence between actual implementation and standardization.
這個(gè)分層模型使實(shí)際實(shí)施和標準易于對應。 - The section on application layer protocols has been expanded and a new section provides an introduction to network protocol analyzers.
并通過(guò)網(wǎng)絡(luò )提供的服務(wù)討論網(wǎng)絡(luò )協(xié)議的分層模型和不同層之間的交互作用。
