名词
中文翻译：双频拨号
同义词：
['two-tone dialling', 'two-tone communication']
例句：
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1. Thecompany's new product is designed for two-frequency dialling.
该公司的新产品是为双频拨号设计的。
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2. The two-frequency dialling system allows for seamless communication between different devices.
双频拨号系统允许不同设备之间进行无缝通信。
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3. In the event of a power outage, the two-frequency dialling feature will ensure that communication remains uninterrupted.
在电力中断的情况下，双频拨号功能将确保通信不会中断。