communications links的用法和样例：
例句
- Parts easy to attack in the system are LAN and communication link, which need to take link encrypting and point-to-point encrypting.
系统易受攻击的环节是局域网与通信链路，需采取链路加密和端到端加密措施。 - It is the testing platform for the R&D of POF link and other digital communication links, and provides the prerequisite and basis for R&D of application systems of POF.
为塑料光纤链路和其他数字通信链路的研究开发提供测试平台，是研发塑料光纤应用系统的前提条件和基础。
