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- A semi-automatic extremely low frequency (ELF) field-strength meter calibration system has been established by author. 作者建立了一个场强到140kV/m的半自动极低频(ELF)场强自动校准系统。
- In electronics, undesirable low frequency currents interfering with a desired signal, and usually caused by a poorly screened alternating mains supply. 在电子学领域，一种不希望发生的低频电流，它干扰所要求的信号。通常这种现象是由于交流供电线路屏蔽不良引起的。
- To derive the residual low frequency current velocity, one usually deploys current meter moorings over 25 hours or more to remove the diurnal and semi-diurnal tidal components. 若要得到低频流速（主要是平均流及周期大于一天的海流），通常会施放流速仪，测量海流时间超过25小时，才能将全日潮和半日潮的成分滤除而得低频流的流速。
- The abnormal colours of seedlings turned a low frequency. 颜色异常的苗木出现频率较低。
- Laser direct writing of micro-OVD with low frequency templates[J]. 引用该论文 魏国军;周小红;周雷;陈林森.
- Sound card frequency meter source code, for on-line collection. When downloading use, please respect. 声卡频率计源代码,为网上收集的。下载使用时,请尊重原创作者的版权。
- If it is a low frequency sound, it is processed as an analog signal. 对低频声进行传统的处理。
- This is my collection of 51 frequency meter source, can have the necessary download. 这是本人收集的51频率计源码，有需要的可以任意下载。
- The direction of the low frequency current with maximum frequency was also WSW. 低频流出现频率最多的方向和潮流基本一致。
- This effect is obvious at lower frequency band. 这种效应在振动低频区段更为显著。
- Medium SMES (200 MVA) are able to compensate some low frequency disturbance. 中型SMES(200MVA),这类SMES能补偿某些低频度的扰动
- The digital frequency meter produces the electriccircuit, a survey control electric circuit, a counter, a latch and thepower circuit by a 1 second pulse is composed. 数字频率计由一个1秒钟脉冲产生电路、一个测量控制电路、一个计数器、一个锁存器和电源电路组成。
- Helmholtz resonator has a good noise eliminating performance at low frequency. 亥姆赫兹共振腔具有良好的低频消声性能,被广泛地应用于低频消声方面。
- Usually in the situation, may survey sketchily using the oscilloscope was measured that the signal the frequency, the precision measuring needs to use the frequency meter. 它的基本功能是测量正弦信号、方波信号、尖脉冲信号以及其他各种单位时间内变化的物理量，因此，用途十分广泛。
- Armstrong was forced to use avery low frequency barely above audibility. 当时这样的频率被认为是“高频”，但只不过是现在所用调幅波段的底部而已。
- Usually in the situation, may survey sketchily using the Oscilloscope was measured that the signal the frequency, the precision measuring needs to use the digital frequency meter. 它的基本功能是测量正弦信号、方波信号、尖脉冲信号以及其他各种单位时间内变化的物理量，因此，用途十分广泛。
- Peak indicator light and LF (low frequency) switch per mono channel. 每路单声信道具有峰值指示灯及低频切除开关。
- Implementation of the software oscilloscope, signal generator, frequency meter, multimeter functions, Audio can be within the scope of completely replacing this equipment. 本软件实现了示波器，信号发生器，频率计，万用表的功能，在音频范围内可完全替代上述仪器。
- Purpose:Low frequency power amplifier,medium speed switching applications . 用途:用于低频功率放大及中速开关。
- Note: Close woundcoils will resonate at a slightly lower frequency. （注：密绕的线圈将会谐振在稍低的频率。）
