微波通信易受障碍物的影响，但不存在保密和安全性的问题。（ ）

相关题目

• In the microwave transmission,the rain attenuation are calculate
• Digital microwave systems can be used for telephone, data, image
• The remote communication of the microwave relay communication is
• In the digital microwave communication system, in order to meet
• What's function of the duplexer in the microwave communication s