In this paper a model of the equivalent linear spring is proposed for approximately calculating fundamental frequencies of a vibrating shaft with an arbitrary crack.
利用等效线弹簧模型近似计算了含裂纹转动轴的自由振动基频。
As the name suggests, mixers produce output signals with mixed frequencies and are fundamental components of many electronic communications systems.
顾名思义，晶体管常用作混频器，可以输出混频信号，并且是许多电子通讯系统的基本元件。
The chords the students liked best have frequencies with that harmonic relationship, too - all the frequencies are integer multiples of a common fundamental frequency.
大学生们喜爱的和弦也都有着最好的谐振关系——所有的谐振频率都是一个常见基频的整数倍数。
A note has a fundamental tone- the pitch we hear- and a series of overtones that occur at higher frequencies.
每个单音都有一个基本调—我们听到的音调—以及一系列的高频调外音。
Dr Declercq points out that it does not matter that the theatre design also removed fundamental tones of the human voice because the brain reconstructs these from the available high frequencies.
Declercq博士指出，这与剧院的设计无关，因为人的大脑本身就可以从高频声音当中重建那些可用的信息。
The active filter acts as an infinite impedance to the external for the fundamental frequency and as a low resistor for harmonic frequencies.
对外电路而言，在基波频率下有源滤波器被控制为无限大阻抗，在谐波频率下被控制为小电阻。
The numerical results indicate that the higher-order mass matrices have a negligible influence on the fundamental frequency, but they affect the frequencies of higher mode vibrations considerably.
数值实验结果表明：高阶质量矩阵对横向振动基频及低频的影响可忽略不计，但它们对高阶横向振动频率有很大的影响。
These fundamental qualities can also vibrate at faster or slower frequencies through the powers of 2 or duality.
这12种基本的特性还可以以2的幂或着对偶二元性来以更快或更慢的波动频率来波动。
It is shown that the thermal lensing effects have considerable influence on the output and resonance frequencies, particularly for the fundamental mode lasers.
结果表明，热透镜效应对输出功率和频率特性影响相当大，对基模输出激光器的影响最为突出。
The fundamental vibration frequencies are also theoretically computed by the finite-element-method.
此外用有限元法对裂纹板作了理论计算。
The fundamental vibration frequencies are also theoretically computed by the finite-element-method.
此外用有限元法对裂纹板作了理论计算。
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