This layer provides a common set of functions to be used by lower-level network device drivers to allow them to operate with the higher-level protocol stack.
这一层提供了一组通用函数供底层网络设备驱动程序使用，让它们可以对高层协议栈进行操作。
Network configuration, spectrum allocation, two-way communication, protocol at lower layer and network management for HFC are analysed and studied.
文中对这种网络的网络结构、频谱划分、双向通信、低层协议以及网络管理进行了分析研究。
Because it plays such a central role in the communication between the upper and lower layers of the Bluetooth protocol stack, the L2CAP layer is a required part of every Bluetooth system.
因为它在蓝牙协议栈的高层和低层通信中起着重要的作用，L2 CAP是每一个蓝牙系统必须的部分。
Because it plays such a central role in the communication between the upper and lower layers of the Bluetooth protocol stack, the L2CAP layer is a required part of every Bluetooth system.
因为它在蓝牙协议栈的高层和低层通信中起着重要的作用，L2 CAP是每一个蓝牙系统必须的部分。
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