The wireless communication system is an important part in the closed loop control system of modular robots, the correspondence between computer and robot is realized by the bluetooth module.

基于蓝牙的无线通信系统是模块化机器人闭环控制系统的一个重要组成部分，上位机与机器人之间的通信通过蓝牙模块来实现。

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In the field of wireless correspondence, high performance of frequency source is the core part of communication facility, radar, electronic reconnaissance and resistance equipment.

在无线通信领域中高性能频率源是通信设备、雷达、电子侦察和对抗设备的核心部件。

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In the event of any supply difficulty or supply disruption on the part of Party B due to an event of force majeure, Party B shall promptly inform Party A and Party C by formal correspondence.

乙方因不可抗力原因导致供货紧张或货源中断，应及时以正式公函向甲方及丙方通报；

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People took to the hospital's Facebook page, upset about the charge, but a person who identified herself as a part of Nora's family said there was a misunderstanding in correspondence with the hospital and asked people to stop posting negative comments.

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