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- To achieve FFT in tradition, the transmission system terminal should have Frequency Multiplication Transformer (FMT) to convert low frequency power to common power. 为实现分频输电，按传统的设计，输电系统终端必须有倍频变压器， 把低频发电机发出的电能转换为工频电能。
- Aiming at the existing problem in harmonics measurement of power system,the paper(presented) a collecting method based on frequency multiplication phase-locked. 针对电力系统谐波测量方法存在的问题,提出了一种基于锁相倍频采集方法。
- To achieve FFTS in tradition, the transmission system terminal should have Frequency Multiplication Transformer (FMT) to convert low frequency power to 50 HZ power. 为实现分频输电，按传统的设计，输电系统终端必须有铁磁型倍频变压器，把低频发电机发出的电能转换为工频电能。
- The comparison shows that as a result of the Nd:GdYVO4 crystal good heat conductivity,under the high efficiency laser pump condition,Nd:GdYVO4/KTP has obtained the better frequency multiplication laser output. 比较得出,由于Nd:GdYVO4晶体良好的导热性,在大功率激光泵浦条件下,Nd:GdYVO4/KTP获得了更好的倍频激光输出。
- The results verify that the average efficiency of Cycloconverter can reach 97% if don not care about the wastage of itself，and that is higher than which of frequency multiplication transformer’s. 仿真结果表明，不考虑变 换器自身损耗的情况下，周波换流站的有功功率变换效率达97%25，高于倍 频变压器的变换效率。
- Frequency multiplication local oscillator 倍频本地振荡器
- parametric frequency multiplication 参量倍频
- low order frequency multiplication 低次倍频
- difference frequency multiplication method 差频倍增法
- many times frequency multiplication 多次倍频
- phase-locked frequency multiplication 锁相倍频
- quadruple frequency multiplication 四倍频
- fourfold frequency multiplication 四倍频
- frequency multiplication phase-lock 倍频锁相
- frequency multiplication phaselocked 锁相倍频
- frequency multiplication sampling 倍频采样
- digital frequency multiplication 数字倍频
- The method of measuring deep soil moisture by VHF/UHF dual frequency multiple polarization Synthetic Aperture Radar (SAR) consisting of vector network analyzer is proposed. 该文提出了利用由矢量网络分析仪构造的VHF/UHF双频、多极化合成孔径雷达(SAR)测量深层土壤湿度的方法；
- optical frequency multiplication 光学倍乘法
- He varied the transmission frequency. 他变换了无线电传送的频率。
