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- fundamental ripple frequency 脉动基频
- fundamental ripple frequence 波纹基频
- Synchronous rectification produces a ripple frequency twice that of the excitation frequency and thus is easier to remove with a lowpass filter. 同步稳压产生两倍激励频率纹波频率，因此更容易被低通滤波器去除。
- The new modified formula not only meets with our experiment result, but also can explain the examples of relationship between the speed and the current ripple frequency of DC motors in the literature. 新的修正公式不仅能够解释文中的实验结果，也能满足以往文献提出的直流电动机转速与脉动电流频率之间的关系。
- Modified formula for sensorless DC motor speed estimation was proposed through the test for relationship between the current ripple frequency and the rotation speed in a 4-pole DC motor. 摘要根据4极直流电动机的转速与脉动电流频率关系的实验结果，对现有的无传感器直流电动机测速公式提出了修正意见。
- Effect of Counter EMF on Ripple Frequency of Current in DC Motor 直流电动机反电动势对其电流脉动频率的影响
- His fundamental concern was for her welfare. 他最关心的是她的幸福。
- Effect of Commutation Process on Current Ripple Frequency in DC Motor 换向过程对直流电动机电流脉动频率影响的分析
- At this time another fundamental change occurred. 这时候又发生了一个根本性的变化。
- A ripple of laughter went through the audience. 观众中响起一阵轻轻的笑声。
- Moderate exercise is fundamental to good health. 适度的运动封健康是绝对必要的。
- Hard work is fundamental to success. 必须苦干才能成功。
- A ripple, as on the surface of water. (水面上的等)细浪，涟漪
- He varied the transmission frequency. 他变换了无线电传送的频率。
- The pebble made a ripple on the surface of the lake. 石子在湖面上激起一个涟漪。
- However, they did not wish for a fundamental change. 但他们并不希望发生根本性的变化。
- A unit of frequency equal to one cycle per second. 赫兹频率的单位，等于每秒一周
- She lay on the bank, listening to the ripple of the stream. 她躺在河岸上，听着小河的潺潺流水声。
- The main effect is to raise the fundamental slosh mode frequency. 主要作用是提高基本的晃动频率。
- A fundamental set of rules having authoritative weight. 十条戒律有权威性的一套基本规则
