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- 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。
- The abnormal colours of seedlings turned a low frequency. 颜色异常的苗木出现频率较低。
- The off-boresight drive signal is a kind of modulated signal with the charaeteristics of low frequency,small amplitude and liable to be interferenced. 离轴驱动信号是一种频率低、幅值小、易受干扰的调制信号,在信号检测中通常是测试的难点。
- 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.
- 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。
- 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。
- 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
- This effect is obvious at lower frequency band. 这种效应在振动低频区段更为显著。
- Energy consumption of variable frequency drive pump are analyzed,and makes sugg estions about its suitable application. 详细分析了变频调速水泵的能耗，对如何合理应用变频调速水泵进行了探讨。
- 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。
- 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。
- 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。
- The microcontroller then sets the frequency driving AOM to let the shifted optical frequency to jump alternatively to either side of the desired saturated absorption peak. 单片机控制AOM在吸收峰左右跳频得到鉴频信号，经数字PID计算反馈控制激光频率，实现了无调制稳频。
- Purpose:Low frequency power amplifier,medium speed switching applications . 用途:用于低频功率放大及中速开关。
- E.Division 15 Contractor shall furnish all adjustable frequency drive controllers (AFD's, also commonly referred to as VFD's) unless AFD's are located in a motor control center. 承包商应提供所有可调频率驱动控制器（简称AFD，通常也成为VFD），除非这些可调频驱动控制器也安装在电机控制室/中心。
- Then it established the control model between the actuator input current and output strain/force, which is used in the low frequency or static driving field and ignores the hysteresis. 建立了一个执行器在低频驱动、准静态领域应用的、忽略磁滞效应、从输入电流到输出位移／力之间的用于位移控制的控制模型。
- Products include reduced voltage starting controllers, variable frequency drive controllers, bubbler systems and systems utilizing programmable controllers. 这些产品包括减压启动控制装置，变频驱动控制装置，喷水系统，以及采用可编程序的控制装置系统。
- 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。）
- Very little effort has been devoted to the experimental measurement of low frequency combustion response. 在低频燃烧响应的试验测定方面只做了很少的工作。
- In audio, a very low frequency oscillation often resulting from a positive feedback path in an amplifier system. 在音响设备中出现的振荡频率极低的低频振荡，常因放大系统的正反馈回路引起。
