multiple frequency 多频 ; [电子] 倍频
dual tone multiple frequency 双音多频
multiple frequency network 多频网
multiple frequency VLF technique 多频甚低频技术
multiple frequency absorption band 倍频吸收带
multiple-frequency electric method 多频组合波电法
DTMF Dual Tone Multiple Frequency 双音多频 ; 双音频多频率
This paper does research on multiple-frequency IGBT high frequency induction heating power supply. In the first place, basic knowledge of induction heating and development of power devices are introduced.
本文以倍频式IGBT高频感应加热电源为研究对象,首先介绍了感应加热电源的基本知识和电力电子器件的发展。
参考来源 - 倍频式IGBT高频感应加热电源的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
Three pipeline coating detection technologies, multiple-frequency current method, ground potential-electrical field method, and pipe-to-soil potential method, are introduced.
本文在分析国内外现有的防腐层检测技术的基础上，提出了地下金属管线防腐层状态检测的新方法----电流梯度法。
Since its output frequency is as twice as the device frequency and it has the merit of soft-switching characteristic, multiple-frequency induction heater is widely used in high frequency application.
倍频式感应加热电源负载输出频率为功率开关管工作频率的二倍，且功率开关器件工作时具有软开关特性，在需要高频应用的场合很有意义。
Wireless frequencies are a scarce resource, so wireless providers use multiplexing to send multiple calls over a single frequency.
无线频率是稀有的资源，因此无线频率提供商使用多路复用技术通过一个频率发送多个呼叫。
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