名词
中文翻译：多频率代码信号
同义词：
['multifrequency code signalling', 'multi-frequency code signalling']
例句：
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1. The new system uses a multifrequency code signal to improve communication efficiency.
新系统使用多频率代码信号来提高通信效率。
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2. The company has developed a multifrequency code signal system that can detect and track multiple targets simultaneously.
该公司开发了一种多频率代码信号系统，可以同时检测和跟踪多个目标。
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3. In this project, we will use multifrequency code signalling to ensure secure communication between the two networks.
在这个项目中，我们将使用多频率代码信号来确保两个网络之间的安全通信。