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- power frequency detecting 频率检测
- Impact in power frequency variation. 频率变化之影响。
- The disconnector shall operator at the power frequency short circuit while MOA's failure under the abnormal conditions. 避雷器带脱离的目的是当避雷器在异常情况下发生故障损坏时，工频短路电流使脱离器工作，脱离器接地端自动脱开，使故障的避雷器与系统脱离，并表明故障避雷器更换。
- A review on the study on power frequency electromagnetic field hazards to organisms. 工频电磁场生理危害的研究进展。
- The New Techniques Development of High Voltage High Power Frequency Converter of ABB Co. ABB高压大功率变频器的最新技术发展
- When the frequency changer has malfunction, power frequency is adopted, and the motor speed is nonadjustable. 万一变频器出现故障时，可工频驱动，转速不可调。
- It is pointed out that the power frequency electromagnetic field is inductive field,but not radiation field. 对输变电工程工频电磁场、无线电干扰进行了理论分析,指出输变电工程工频电磁场是感应场,而非辐射场。
- The average EEG(AEEG) increased while the average mean power frequency (MPF) and comprexity of EEG decreased in muscle fatigue. 肌肉疲劳过程中平均脑电值(AEEG)均值增加,平均功率频率值(MPF)和脑电信号复杂度[C(n)]均值下降,该现象广泛分布于整个大脑皮层;
- Methods 25 patients who had foreign body inside the digestive tract but the X-ray exploration was negative, were exarnined with ultrasonic inspection with high and Iow frequency detecting head. 方法对25例有明确异物吞入史,但X线探查为阴性的患者,运用超声高、低频探头对可疑部位进行探查定位。
- Review neutral line potential shift protecto,rdepict mostly index of power frequency overvoltage 、 undervoltage and electric surge protection. 通过对中性线电位偏移保护器的回顾,简述了中性线电位保护器的设计思想和工频过、欠电压保护的主要指标。
- The principle of arc-suppression coil with three phases and five columns,and theory of power frequency extinguishing arcing were introduced. 介绍了三相五柱式消弧线圈的工作原理,单相电弧接地过电压的工频熄弧理论。
- For three-phase AC power supply systems and locomotive converter complex and electric locomotives gradually tend to adopt a one-way AC power frequency. 因三相交流供电系统和机车变流装置复杂，电力机车逐渐趋向采用工频单向交流电。
- Secondly, two classical models of distributed parameter DLSP: power frequency model and time-domain model.Based on these two models dynamic phasor model has been deduced. 其次，本文分析了同杆双回线分布参数的两种经典模型：工频量模型和时域模型，并在此基础上推导了时变动态相量模型。
- S.L. Lu, C.E. Lin, and C.L. Huang, "Power frequency harmonic measurement using integer periodic extension method," Electric Power Systems Research, vol. 44, 1998, pp. 107-115. 叶迺昆，电力谐波频谱分析之改善，国立中山大学电机工程学系硕士论文，民国八十七年六月。
- The power frequency voltages and currents induced in UHVDC lines under different parallel erection lengths and different adjacent distances are calculated. 计算了交/直流线路不同平行架设长度、不同接近距离下特高压直流线路上感应的工频电压、电流。
- driving frequency detecting method 驱动频率检测系统
- The king was shorn of his power by his nobles. 国王被手下的贵族们剥夺了权力。
- R.Sekerinska and V.Dimcev, “Measurement of power frequency magnetic fields in different environments,” IEEE Electrotechnical Conference, pp.1107-1110, 2000. 陈韦达，电力电缆线路磁场之降低对策，国立台湾科技大学硕士论文，民国九十四年六月。
- Theoretical and actual result analyses show that high frequency detection is an effective method in the prediction of carbonate reservoir beds. 理论及实际效果分析表明 ,高频检测是预测碳酸盐岩储集层的有效方法 ,该方法在充分利用地震波的频率信息预测岩性及油藏领域方面开辟了一新思路 ;
- Such hoists change the power frequency through transducer and the lifting speed and the traveling speed to make the electric hoist travel more smoothly and more accurately. 变频功能型电动葫芦利用变频器使电源频率发生变化，实现电动葫芦起升机构和运行机构的变速，使电动葫芦运行更平稳、定位更准确。
