低频

For improved low-frequency magnetic shielding, a shield consisting of a high-permeability magnetic material (e.g., Mumetal) should be considered.

要改善低频磁屏蔽的效果，就要考虑用高导磁率的磁性材料来制作屏蔽体。

The optimized projects of eliminating low frequency torque ripple in this subject are to make use of low speed and high torque permanent magnetic synchronous motors.

给出了低速大转矩无齿轮传动系统消除低频转矩脉振的优选方案是采用低速大转矩稀土永磁同步电动机的结论。

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。

Mr. Gong Yi, a famous Guqin master of unique personal playing style, has taken advantages of the strong points of different schools to show the unique lingering charm vividly and incisively in this collection through his exquisite playing technique and superlative craftsmanship, in combination of the audio treatment technology of Pauler Acoustics, Germany for the master tape, to allow you be intoxicated with the broadness of motion, the deepness and richness of low frequency and the smoothness of space sense, as if staying in a deep and secluded valley in remote mountains, surrounded by ancient woods and cool spring, reaching a selfless state with an integration of person and the Guqin.

素以博取众家之长，形成极具个人风格的著名古琴演奏家--龚一先生，在本专辑中更以其鬼斧神工的精湛演奏技巧，结合母带后期采用德国老虎鱼音频处理技术，将琴乐特有的空间韵味表现得淋漓尽致，使你沉醉于其宽广的动态，浑厚丰满的低频和流畅的空气感中，犹如置身于深山幽谷、古木寒泉中，臻至琴意相通，人琴合一的无我境界。

The BN did lack a little of the impact in the lows compared to the melos, but it still did OK.

当然Melos的低频冲劲确实更强一些，但NOVO这方面已经很好。

A spectacle-frame type electric hypnotizer is composed of spectacle frame, low-frequency pulse current generator in the box at the position of pad bridges and therapeutic electrodes which are arranged at the positions on spectacle frame, corresponding to the upper and lower orbits and metencephalon.

本发明涉及一种镜架式电睡眠器，包括镜架、设置在镜架鼻托部位盒内的低频脉冲电流发生器和治疗电极。治疗电极设置在镜框上且与上、下眼框相对的位置处及与后脑部位相对的位置处。

An image fusion method based on HSI transform and Laplace decomposition is proposed for multi-focus micropaleontology image fusion.Firstly images to be fused are transformed into HSI,then the I component is decomposed by using Laplacian.The high-frequency and low-frequency images are fused respectively based on Robert grads and region weighted average.Last the fused image is obtained by inversing HSI transformation.

首先对待融合的图像进行HSI变换，用Laplace算子对图像的I分量进行多级分解，分解后的低频分量和高频分量分别采用基于Robert梯度和区域加权均值的融合规则进行融合，最后再进行HSI反变换得到融合图像。

Results The patients were predominently female teenagers with a history of gradual onset of bilateral hearing loss, pure tone audiometry revealed symmetric ascending audiograms with moderate hearing loss at frequencies below 1 kHz, but relatively normal hearing at 2 kHz and above. Speech reception thresholds were between 40 to 85 dB HL, discrimination score was from 29% to 68%. Stapedial reflex, auditory brainstem response and compound action potentials were absent or threshold elevated disproportionately to the pure tone threshold. All of the patients had normal cochlear microphonics and robust spontaneously and transiently evoked otoacoustic emissions, the TEOAE showed no contralateral suppression effects as seen in normal subjects.

结果 该病多在青春期后起病，女性较多发，表现为渐进性双耳对称性听力下降，纯音听力以低频损失为主，语言接受阈升高，分辨率下降，镫骨肌反射及ABR引不出或阈值明显升高与纯音听力不成比例，耳蜗微音器电位正常，听神经动作电位引不出，耳声发射波幅高、时程长且不为对侧声刺激所抑制。

In the measure amplification circuit, direct-current or low frequency signal come from a common sensor , conveying in only rhyme fashion way after amplification, In typical situation, serviceable signal maximum amplitude probable only have a certain number or amount millivolt, but common mode noise suppression may be up to several volt, as a result it is significant to the factor of the amplification input drift and noise etc for total precision, the amplification in itself common mode restraints features is also equally binding problem.

在测量用的放大电路中，一般传感器送来的直流或低频信号，经放大后用单端方式传输，在典型情况下，有用信号的最大幅度可能仅有若干毫伏，而共模噪音可能高到几伏，故放大器输入漂移和噪声等因素对于总的精度至关重要，放大器本身的共模抑制特性也是同等重要的问题。

To damp out the inter-area oscillation in power system, a novel power system stabilizer design approach based on minimax principle was proposed.

针对电力系统中存在的低频振荡现象，提出了应用极大极小值原理设计电力系统稳定器的新方法。

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。