低频
- 名low frequency;lf
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(1) [low frequency]∶接近于无线电频谱最低频域的频率
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(2) [bass frequency] [声]∶可听声信号的低频部分或用于这部分的通道,例如250赫以下的频率成分
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极低频电磁场对小鼠睾丸细胞DNA以及精子染色质结构的影响
Effects of extremely low frequency electromagnetic fields on DNA of testicular cells and sperm chromatin structure in mice
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低频超声小探头联合螺旋CT检查对胃癌术前分期的评价
Retrospective evaluating low frequency mini-probe endosonography combined with spiral computed tomography in the preoperative staging of gastric carcinoma
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这就确凿地证实了振荡的本质是次光球层的低频声波本征模式。
This firmly establishes the nature of the oscillations as low acoustic eigenmodes of the subphotospheric layers .
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杨利伟解释道,10赫兹以下的低频振动会引起人的内脏共振,甚至会危及一个人的生命。
Vibrations in the spacecraft below 10 Hz can damage the internal organs , and even threaten a person 's life , Yang explained .
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提示心房损伤后,P波频谱能量分布向更低频率段转移。
It was suggested that P waves power spectrum shifted to lower frequency after atrial injury .
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太阳X射线爆发与甚低频传播相位异常关系的研究
Study on the Correlation between the Solar X-ray Burst and the VLF Phase Anomaly
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低频电磁场频率对半连铸高强Al合金组织结构的影响
Effect of Frequency of LF Electromagnetic Field on Microstructures of Semi-Continuously Cast High-Strength Al Alloy
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低频、低功耗CMOSLNA的设计优化技术
Low frequency and low power CMOS LNA design optimization techniques
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COX-2在大连地区胃癌中的低频率表达、甲基化状态及其肿瘤遗传学意义分析
Infrequent COX-2 Expression Due to Promoter Hypermethylation in Gastric Cancers of Dalian , China
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DDS在低频矢量网络分析仪中的应用
The Application of DDS Technology in Net Analyzer
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低频脉冲磁场对大鼠学习与记忆、EEG及脑组织形态学的影响
Effects of Low-frequency pulsed electromagnetic field on learning , memory , EEG and brain tissue morphology in rats
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低频交变电磁场对(Al2O3+Al3Zr)p/Al复合材料凝固组织和干滑动磨损性能影响
Effect of Interchanged Low-frequency Electromagnetic Field on Microstructure and Property of ( Al_2O_3 + Al_3Zr ) - p / Al Composites
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低频脉冲电磁场治疗骨质疏松症的Meta分析
A meta-analysis of pulsed electromagnetic fields for osteoporosis
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磁光谱表明,θk极大值对应的频率随Nd的掺入量增加而移向低频端。
The magneto-optical profile shows that the frequency corresponding to the maximum θ _k shifts to low frequency as Nd component increases .
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TCSC阻尼系统低频振荡的控制策略分析
The control method analysis of TCSC in damping low-frequency oscillation
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随着计算机进一步发展,科学计算可视化越来越受到重视;而适用于低频区RCS(雷达散射截面)计算的传统方法MOM(矩量法),也越来越显示其价值;
With the development of visualization in scientific computing , traditional MOM for low frequency RCS has been re evaluated .
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电力系统低频振荡与PSS分析
Power System Low Frequency Oscillation PSS Analysis
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采用相位推算法测量低频FSK信号频率
Measuring Frequency of Low FSK Signal Adapting Phase Deducted Method
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低频词比高频词有更大的ERP晚正成分(LPC);
Amplitudes of late positive component ( LPC ) were larger for low than for high frequency words ;
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ENSO事件对中高纬大气低频振荡的调频作用
Frequency Modulation Effect of ENSO Events on Atmospheric Low-frequency Oscillations in the Extra-tropical Latitudes
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Si/SiGe/SiHBT的直流特性和低频噪声
Si / SiGe / Si HBT 's DC Characterization and Its Low-frequency Noise
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海岸碎波拍的计算近岸低频波浪的Boussinesq模拟
Boussinesq Modeling of the Surf Beat in the Nearshore Zone
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第三种方法是测量二极管在各负偏压点下的输入阻抗与低频结电容C(V)来求得二极管的结参数;
In the third method the parameters of a varactor diode are determined by the measurements of the input impedance only at negative biases and the junction capacitance at low frequency ;
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对于索质量较大、张力较大、MR阻尼器安装位置较低、外界激励较大、频谱特征多变、低频为主时需要较强的MR阻尼器。
To some larger cable mass , larger cable tension , lower site of dampers , larger excited loads , more complex frequency spectrum and low frequency , the stronger MR damper is need .
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掺入Co2+主要影响材料的磁导率,使μ〃rf的第二峰随着Co2+离子增加向低频移动。
But doped Co 2 + mainly affects permeability and the second peak of μ″ r moves to low frequency with Co 2 + content increase .
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最后,通过掺杂实验表明,掺杂的Ag离子增加低频时的导电性,使交流阻抗谱趋于平坦。
At last , the dope experiment shows that Ag + can improve conductivity of complex in low frequency and make the spectrum more flat .
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直接耦合GMSK调制器低频性能的改进
Improvement of Low Frequency Performance of DC-coupled GMSK Modulators
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PCMCIA卡式低频振动波形数据记录器
A data recorder for low frequency vibration waveform with PCMCIA memory card
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电力系统稳定器(PSS)用来解决电力系统低频振荡问题。
The power system stabilizer ( PSS ) is used to resolve the problem of low frequent oscillation in power system .
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Wolfram综合征I型基因异质性突变引起低频非综合征型聋
Heterogenous mutations of Wolfram syndrome ⅰ gene responsible for low frequency nonsyndromic hearing loss