Changing volume ratio of the two-chamber muffler can improve the effective noise reduction frequency range of the muffler.
通过改变消声器的两腔容积比，可以改善消声器的有效消声频率范围。
This setting can be set to a value between 1 and 1000 which will result in a 0.1 percent to 100 percent reduction in frequency.
这个设置可以设置为1到1000之间的值，这会使频率下降百分之0.1到百分之百。
The good news, the editorial writers say, is that women in the placebo group experienced about a 30 percent reduction in severity and frequency of symptoms during the 12-month follow-up period.
好消息是，社论作者说，安慰剂试验组的妇女在12个月的随访期间，频繁和严重的症状减少了30%。
One is passive frequency reduction, one side is to enhance heat dissipation, effect nature is far.
一面是被动降频，一面是增强散热，效果自然有着云泥之别。
By using a numerical method, the effect of changing in magnetic field upon vibration frequency and coefficient of reduction is presented.
最后给出数值结果，表明磁场的变化对振动频率及衰减系数的影响。
Therefore, the space charge reduction factor equation based on the sheath helix model is inappropriate at high frequency.
因此，使用螺旋导电面模型在较高频段计算空间电荷降低因子是不合适的。
The study shows that the difference of the space charge reduction factor between the sheath model and the perfect conducting tube is small at high frequency.
结果表明，螺旋导电面模型相对理想导电圆筒中的空间电荷降低因子在较高频段变化不大。
The result shows that average absorption coefficient and noise reduction coefficient separately equal to0.58and0.60 and fine property of sound absorption at middle-low frequency.
结果表明材料的平均吸声系数和降噪系数分别达0。58和0。60，且材料的中低频吸声性能优良。
The model has fully considered the multi way of transition, as well as the frequency and length affected to the reduction in order to have more practical value.
该模型充分考虑了多径传播，以及频率和长度对衰减的影响，使其更具有实用价值。
Another source with a 12v battery, a 50hz effective frequency to avoid interference due to the reduction of power conversion circuits, the entire hardware circuits are more simplified.
另外电源采用了12V蓄电池，有效的避免了50hz工频干扰，由于减少了电源转换电路，整个的硬件电路也更加的简化。
Random pulse width modulation technique can be used to distribute voltage harmonics over a wide frequency range and to realize the reduction of acoustic noise and vibration.
随机脉宽调制技术可以使逆变器输出电压的谐波成分均匀地分布在一个较宽的频率范围内，达到抑制噪声和机械振动的目的。
Implementation will be used as the character encoding of high frequency low as possible, thus making the total length of the reduction.
以此实现将使用频率高的字符的编码尽可能的少，也就使得总的长度减少。
The item of attribute frequency in the scan vector was taken as heuristic information to improve the efficiency of attributes reduction.
以扫描向量中的属性频率项作为属性约简搜索的启发信息，提高了属性约简效率。
Transfer function for reduction to pole can be used to reduce directional oblique magnetic anomaly to vertical magnetic anomaly in frequency (or wavenumber) domain.
在频率(波数)域中利用化极转换函数可以将具有方向性的斜磁化异常转换为方向性不明显的垂直磁化异常。
To overcome the shortage of information gain in text categorization, this paper proposes a method of feature reduction based on the relative document frequency balance information gain (RDFBIG).
针对文本分类中信息增益降维方法的不足，提出了一种基于相对文档频的平衡信息增益(RDFBIG)降维方法。
Based on reconstruction of low frequency reduction furnace 'cooling water circular system, arrived at the effect of water saving and gained economic benefits.
通过对工频炉冷却水循环系统的改造，达到了节水的效果，取得了一定的经济效益。
With the reduction of natural frequency stiffness and transformation of modal shape structure, the corresponding of the structure can also be changed.
刚度的减小自然伴随结构自然频率的减小和结构模态振型的转变，相应结构的动力响应也会出现转变。
The suitable frequency range of noise reduction is suggested.
并在此基础上提出车内降噪的频率范围。
Get the relation between spring tube inherent frequency and its structure parameter. It provides the theory basis for vibration reduction design and dynamics analysis of spring tube.
得出弹簧管固有频率和其主要结构参数之间的关系，为弹簧管的减振设计和进一步的动力学分析提供了理论依据。
The natural frequency for the main component frame vibration loom is analyzed, the reasonable layout and measuring is put forward, the reference data for vibration reduction is provided.
对织机主要部件机架的振动进行了固有频率的理论分析，给出了合理的测点布局与相应的测试方法，为减振提供了参考数据。
Testing and analyzing the noise source of idle run and cutting, noise frequency characters and all kinds of methods for noise reduction for the surface planer were carried out.
试验和分析木工平刨床空转和切削时的噪声源、噪声频率特性和各种降噪方法。
With the depth increasing, the effect of vibration reduction is improved and furthermore the vibration reduction by trenches is more fit for the high frequency vibration.
而隔振沟宽度和隔振沟位置对隔振沟减振效果影响不大；隔振沟对高频振动的减振效果尤为明显。
Through improving and extending the process of computing core, the minimal reduction algorithm based on attribute frequency heuristic information are put forward.
对分辨矩阵求核过程进行改进与扩展，给出了一种以属性频度作为启发式信息计算最小约简快速完备方法。
Both of attribute weight frequency and strong compressible set are used to simplify discernibility matrix so that computing complexity is decreased and reduction efficiency is.
同时利用属性加权频率和强等价集概念化简区分矩阵，既减小了计算复杂度又提高了约简效率。
Because of the use of frequency converter, so that pump speed decreased, exports to reduce stress, a reduction of mechanical wear, reducing maintenance workload, extended equipment life.
由于变频器的使用，使泵转速下降，出口压力降低，减少了机械磨损，降低了维修工作量，延长了设备的使用寿命。
During the entire blinded evaluation period, active stimulation was associated with a mean 37.9% reduction in seizure frequency, compared with a mean 17% reduction during the sham activation, Dr.
在整个盲性评价期内，阳性刺激组患者癫痫的发作频率平均减少了37.9%，而假刺激组仅平均减少了17%。
The new algorithm carries out the reduction processing to the generated decision rules containing the frequency attribute and obtains the simplest decision rules.
新的算法对生成的带频度属性的决策规则进行约简处理，得出最简决策规则。
Both of attribute weight frequency and strong compressible set are used to simplify discernibility matrix so that computing complexity is decreased and reduction efficiency is increased.
同时利用属性加权频率和强等价集概念化简区分矩阵，既减小了计算复杂度又提高了约简效率。
Both of attribute weight frequency and strong compressible set are used to simplify discernibility matrix so that computing complexity is decreased and reduction efficiency is increased.
同时利用属性加权频率和强等价集概念化简区分矩阵，既减小了计算复杂度又提高了约简效率。
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