低频

Low frequency sound waves (around 19 Hertz), which are below the threshold of hearing, have also been shown to precipitate a feeling of presence and the perception of shadowy images in the periphery of vision.

低频声波（约19赫兹）人耳听不到，但是也被证实可以让人产生一种有东西存在的感觉，并且在视力边缘感觉到有阴影。

When this microphone is used at a distance, it will sound quite thin or tinny because of the low bass pick-up.

当这只传声器被用在与声源处于一段距离时，它拾取的声音将非常单薄因为低频被消减。

And modified lead-based perovskites with larger tolerance factor, have less anharmonic coefficient with low frequency polar mode.

改性铅基钙钛矿因为在极化模低频化的同时有更小的非谐性系数，所以能在更大许容因子的情况下获得近零谐振频率温度系数，同时保持高介电常数。

We emphasize the measuring principle of low frequency IF with forcing vibrate torsional pendulum.

重点讲述了强迫振动扭摆法测量低频内耗的原理。

The effects of trace Ce and La on the damping capacity of aged Zn-22%Al have been studied using TEM,SEM and room temperature low frequence torsional pendulum damping meter.

采用自然时效、人工时效等热处理工艺，借助透射电镜和室温低频扭摆内耗仪，研究了微量Ce，La对高阻尼Zn-22%Al合金时效后显微组织和阻尼性能的影响。

Two LFO's are available for tremolo, vibrato and filter modulations.

两个低频振荡的可供颤音，颤音和过滤器的调制。

The frequency range and distortion model affected by Faraday rotation were analyzed. A kind of calibration algorithm was introduced, in which trihedral corner reflectors were used to calibrate POLSAR image subject to channel imbalance, Faraday rotation and RCS distortion. [2]Three kinds of target decomposition theorems used to extract polarimetric features of SAR image were studied in detail. A kind of POLSAR MLC image data decomposition method based on classical coherent decomposition theorem of POLSAR SLC image was introduced, which was used to extract polarimetric features of POLSAR MLC image.

当工作频率小于1GHz时，法拉第旋转是影响低频星载极化SAR图像定标的一个重要因素，论文分析了受法拉第旋转影响的波段范围和误差模型，提出了一种校正通道不平衡度、法拉第旋转和绝对幅度增益的极化定标算法，仅使用一种点目标——三角反射器作为定标体，应用于受法拉第旋转影响的极化SAR图像定标； [2]深入研究了三类用于SAR图像极化特征提取的目标分解理论。

Apart from anything else, we just loved the clean but always extended and tuneful bass this setting gave, with an utterly convincing sense of timing that made the most of the rhythmic qualities of any musical style.

除其他的以外，我们喜欢这个设置带来的这种干净但下潜好而和谐的低频，并带有绝对的令人信服的时间控制感受，还原各种音乐类型的主要的节奏品质。

For example, the top two octaves of a tweeter or the midbass of a woofer.

举例来说，前两个八度的高音或一个低音中低频。

Starting with low frequency IC tags, Cantechs also pays attention to research and application of Ultra High frequency IC tags.

以低频电子标签起步的凯泰国翔目前也在关注超高频电子标签的研发和应用。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。