low-frequency

Objective: The observation and evaluation of Low-frequency electric stimulation transverse abdominal muscle for Lumbar intervertebral disc protrusion ( LIDP) of clinical curative effect.

目的：观察和评价腹横肌低频电刺激对腰椎间盘突出症的临床疗效，对其结果进行统计分析，为治疗腰椎间盘突出症的提供有效的方法和临床依据。

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Purpose: Low frequency power amplifier , medium speed switching applications.

用途: 用于低频功率放大及中速开关.

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Its shortcomings are mainly low structural stability, low low-frequency fatigue strength and stress corrosion cracking.

其缺点是组织稳定性不好 、 低频疲劳强度低、有应力腐蚀开裂倾向.

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The abnormal colours of seedlings turned a low frequency.

颜色异常的苗木出现频率较低.

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Uses: Applicable to low-frequency AC circuits, DC and pulse circuits.

用途: 适用于低频交流电路, 直流电路及脉动电路.

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Development and Effect Analysed of Tapping Machine at low-frequency Vibration

低频振动攻丝机的研制和使用效果分析

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Low-speed jet flames are known to flicker a low frequency.

在低速射流的预混火焰和扩散火焰中都存在火焰闪烁现象.

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Low-frequency oscillations deduced by four-day periodic thermal forcing

短时间尺度周期性热力强迫下流型的低频振荡

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Ambient noise of the test room and signal characteristics of audiometric system seem to be the two main variables during the extended low-frequency hearing tests. The present data were compared with ISO 226-1987 and some other reports.

文中结果同ISO226-1987及国外有关资料进行了比较.分析表明，测听室环境噪声、所用信号的谐波失真及频率稳定性乃影响扩展低频测试结果的主要变量。

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The scanner emits a low frequency radio signal, activating the microchip.

扫描仪会发出一些低周波的无线电信号, 来激活微芯片.

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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.

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The low-frequency inductance loop emerged at the water content of20%. It disappeared with increasing water content and a single capacitive impedance loop was observed.

含水量较低时，X70钢在大港滨海盐渍土中腐蚀的电化学阻抗谱会出现低频感抗弧，随着含水量的增加，低频感抗弧消失，表现为单一的容抗弧。

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The low-frequency-compensation principle for TEM-horn antenna was verified by experiment.

通过对TEM喇叭天线低频补偿的实验,验证了低频补偿原理的正确性.

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Applicafion of the Low-Frequency Electrical Pulse Oil Production Technology in the Downhole.

与井下 低频 电脉冲采油技术的应用>>相似的文献.

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This approach addresses eliminating mostly of signals disturbing characters by only reserving low-frequency portion of result of wavelet transform which carries general picture of original character, at the same time, ignoring high-frequency portion of result of wavelet transform which carries mostly of disturbing signals.

此方法只对反映原始字符信号概貌的小波变换低频部分保留，同时忽略包含大量干扰信号的高频部分，由此达到剔除大部分干扰信号的效果。

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Time domain coupled dynamic analysis method is used to calculate the dynamic behavior of tanker point mooring system, fully considering viscous effects, nonlinear second-order low frequency load, and dynamic characteristics of the mooring lines. Fatigue of the mooring lines is checked.

采用耦合的时域动态分析方法，充分考虑粘性作用、非线性的二阶低频载荷、系泊缆的动力特性等，对油轮的单点系泊系统进行动力响应分析，并对锚索进行疲劳校核。

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Good electrical insulation under the condition of low frequency and low voltages.

在低频、低压条件下具有良好的电气绝缘性.

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This paper introduces low frequency characteristic extension technique of velocity vibration sensor.

本文介绍了速度型拾振器低频特性的拓展技术研究.

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Also produce various kinds of high-low-frequency transformers, inductors and other electronic series.

同时也生产各类高低频变压器 、 电感等电子系列.

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In this paper low-frequency vibration problems of rotating machinery are investigated.

应用时频分析方法研究了回转机械低频振动问题.

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A low-frequency awakening technology applied in this system to switch the state between working from resting.

在系统中引入低频唤醒技术,实现下位机在工作状态和休眠状态之间的切换.

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Firstly, this scheme implements a multi-scale morphological open-close filter, to get the low-frequency smooth image for the source image.

这种方法首先对源图像进行多尺度形态学开闭滤波，得到源图像的低频平滑图像；

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Several Problems of Master Design of the Low Frequency Vibration Tapping Machine Tool

低频振动攻螺纹机床总体方案设计中的几个问题

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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.

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Power System Stabilizers ( PSS ) are effective in damping the low frequency oscillation.

电力系统稳定器 ( PSS ) 的应用,在抑制低频振荡方面取得了明显的效果.

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Fiber Bragg grating ( FBG) vibration sensor has become a new research field due to its many advantages, including high sensitivity, strong ability of anti-interference, good performance in low-frequency detection, and easy operation in multiplexing.

光纤Bragg光栅（FBG）振动传感器具有高灵敏度、强抗干扰能力、良好的低频探测性能、易于成阵复用等优点，已经成为FBG传感新的应用研究领域。

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Finally, the seismic imped-ance inversion is performed with the constraint of different-scale frequency component to achieve the low-frequency impedance sec-tion, the middle/ high-frequeney impedance section, and the overall frequency impedance section synthesized by the former two sec-tions.

然后分别利用井的不同尺度的频率分量作为约束条件，进行了地震波阻抗反演，获得了低频波阻抗剖面、中高频波阻抗剖面以及由低频和中高频波阻抗剖面合成的全频波阻抗剖面。

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The synchronized low-frequency rectifier is similar to a push-pull rectifier.

同步 低频 整流器与推挽整流器相似.

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Super-low frequency AC losses of HTS bi2223/ ag tape measured by magnetization method

磁化法测量Bi2223/Ag高温超导带材的超低频交流损耗

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This paper reports a 31 bit low frequency SAW programmable tapped delay line. It is a key device in signal processing of interference free spread spectrum communication system.

文章报道的31位声表面波低频可程序抽头延迟线是一种用于扩频抗干扰通信系统所用的关键信号处理器件。

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