This paper mainly discussed the technology of frequency management of communication network based on the physical layer and the data link layer.

本文主要研究了基于该协议物理层和数据链路层的通信网频率管理技术。

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This policy addresses concerns about when (timing) and how often (frequency) these model management practices and procedures are applied.

该政策处理的是什么时候应用模型管理操作和规程（计时），多久进行一次（频率）。

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CRTC's responsibilities limited to technical fields such as frequency management, with the courts policing media output by applying hate and libel laws.

ECONOMIST: Free speech in Canada

Continuing to reduce the costs of on-line storage will require the management of stored content to optimize availability depending upon frequency of use and use of commodity storage and other data center equipment.

FORBES: Nothing Comes for Free

This development is made possible by a new wave of technology: radio-frequency ID chips the size of pepper grains, broadband wireless and Web-based "dashboards" enabling monitoring and management.

FORBES: Your Product's a Hit