Based on T type filter, the new ballast can achieve a wide dimming range with a very narrow frequency variation range, and it can operate with low lamp current crest factor.
基于T型滤波器的调光方法，能在很窄的工作频率范围内实现深度调光，同时具有灯电流波峰因数低的优点。
The paper studied the issue of low frequency in shallow parts of cross-hole seismic reflection sections using imaging principle and deduced frequency variation factor.
本文利用成像原理对井间地震反射剖面的浅部频率变低问题进行了研究，导出了频率变化因子。
It features the low sintering temperature resulting in low power consumption, medium dielectric constant, high quality factor and temperature stable resonant frequency.
其具有降低烧成温度节能、中等介电常数、高品质因数、稳定的谐振频率温度特性。
Generally speaking, the most dangerous exothermic reaction system is such that has low activation energy and high frequency factor.
一般来讲，最危险的放热反应系统是具有低活化能且反应热很大的系统。
The design of the low-frequency power is the key factor to the control process of the mine lift.
在交流提升机的自动控制中，低频电源的设计是低频拖动控制的关键。
The attenuation factor of longitudinal wave was changing linearly, whereas the attenuation factor of the slow shear wave kept nearly constant with a low frequency on the exploration seismic band.
纵波的衰减系数在地震频带内基本上呈线性变化，而横波的衰减系数在地震频带内除低频外基本保持稳定。
Waveform distortion of super low frequency standard shaker is an important factor which influences the calibration precision.
波形失真度是影响超低频振动计量校准精度的重要因素。
When the frequency is higher than the cut-off frequency, as the frequency increases, voltage amplification factor will be reduced, thus the circuit has a "low-pass" characteristics.
当频率高于截止频率时，随着频率的升高，电压放大倍数将降低，由此电路具有“低通”的特性。
When the frequency is higher than the cut-off frequency, as the frequency increases, voltage amplification factor will be reduced, thus the circuit has a "low-pass" characteristics.
当频率高于截止频率时，随着频率的升高，电压放大倍数将降低，由此电路具有“低通”的特性。
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