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恒定频率；固定频率
1、cumulative frequency───[统计]累积频率，[电子]累积频数
2、frequency modulation───调频
3、frequency range───频带; 频段；[电子][通信]频率范围
4、frequency polygon───[统计]频数多边形
5、frequency equation───频率方程
6、frequency generator───[计]频率发生器
7、frequency───n.频率；频繁
8、calorimeter constant───量热计常数
9、constant───adj.不变的；恒定的；经常的；n.(Constant)人名；(德)康斯坦特；n.[数]常数；恒量
1、The simulation result shows the accuracy of the modeling of the direct-driven variable-speed constant-frequency wind turbine generators.───FangZhen结果说明了直驱型变速恒频风力发电机组模型的正确性以及良好的运行特性；
2、Variable speed constant frequency wind generation is a trend of wind generation system.───变速恒频风力发电已成为并网风电机组发展的趋势。
3、Twin stator brushless doubly fed generation system is quite prospective for variable speed and constant frequency solutions.───而双定子无刷双馈风力发电XiTong是当前变速恒频风力发电技术研究中一个很有发展前景的课题。
4、Variable speed constant frequency (VSCF) double fed wind power generation is the research hotspot in wind power generation systems.───在风力发电XiTong中，变速恒频双馈风力发电XiTong是国内外研究的热点。
5、A control strategy for piezoelectric transformer backlight inverter based on a constant frequency control and phase control is presented.───以定频控制和相位控制为基础的控制方式被用来控制压电式背光换流器XiTong在本文中被提及。
6、The technology of variable-speed constant-frequency wind energy generation, is the main form of wind turbine generators.───变速恒频风力发电机组，是目前风力发电机组的主流形式。
7、Two control ring work together to realize variable speed constant frequency.───两个控制环同时工作，实现变速恒频。
8、The high power shaft alternator constant frequency systems developed by Siemens is introduced, which is suitable for large container ships.───介绍了西门子开发的大功率轴带交流发电机恒频供电装置，适用于大型集装箱船；
9、We design a suit of aviation AC excitation generator system, it insures the output voltage is constant frequency and constant voltage.───我们设计了一套航空用交流励磁发电机XiTong，以保证输出电压恒频恒压。
1、Subsequently, an open loop experiment has been tested which verified the feasibility of the experimental generation system can run in variable speed and constant frequency condition.
2、Radio used for communication uses a constant frequency carrier with some kind of amplitude modulation.
3、Suppose the speakers both emit a pure sinusoidal sound wave of constant frequency.
4、A variable speed constant frequency wind power generation system of doubly-fed induction generator based on converter excitation was described.
5、Twin stator brushless doubly fed machine generation system which has no electrical brush and can running in variable speed and constant frequency condition is very suitable for wind power generation.
6、This paper focuses on voltage regulation strategies of 400 Hz CVCF ( Constant Voltage Constant Frequency ) inverter.
7、The sequence generator produces the phase control signals and is triggered by step command pulses from a constant frequency clock.
8、In recent years, the variable speed constant frequency wind generator system is the most widely question for discussion at home and abroad, especially for doubly-fed induction.
9、The stepping rate is fixed by a constant frequency clock, which is controlled by a one-bit signal from the microprocessor.