| 1. | Because of their inertia, the electrons will overshoot and oscillate around their equilibrium positions with a characteristic frequency known as the plasma frequency .
因为电子的惯性，它们将冲过平衡位置，并以特征频率围绕它们的平衡位置振荡。 |
| 2. | And then the calculation measures of the characteristic frequency that adopt the model of eddy of current ring are deduced
最后采用了实际试样对此公式进行了验正，取得了满意的结果。 |
| 3. | Ac alternating current ( ac ) is electric current that alternates between a positive maximum value and a negative maximum value at a characteristic frequency , usually 50 or 60 cycles per second ( hertz )
交流交流是指电流在正负最大值之间以特定的频率变动，通常频率为50或60赫兹。 |
| 4. | The characteristic frequencies of the raman and infrared spectra of the fergusonite and aeschynite group minerals , monazites and the rare earth fluoro - carbonate minerals have been determined and assigned
( 3 )变生态矿物拉曼光谱的强度很弱、谱线宽而弥散，而退火晶态矿物的拉曼谱峰强而尖锐。 |
| 5. | As is the case with everyday objects such as wineglasses or guitar strings , objects made from lower - mass materials have higher characteristic frequencies than otherwise identical objects made from higher - mass materials
将原有的镁或硼以它们的同位素取代，我们可以制造出由不同质量的原子所构成的硼化镁。 |
| 6. | The loading effect on gear vibration is explained by analysis of the simplified gear vibration model . and also the main characteristic frequency is given under the loading action , which is verified by many experiments
通过对齿轮振动模型的分析和简化,阐述了载荷对齿轮振动的影响,找出了齿轮在载荷作用下振动的主要特征频率,并经大量的实验证实 |
| 7. | We rounded analysis that ring stator ’ size parameter how to affect ring stator ’ characteristic frequency by use the software for numeric analysis , and afford theoretical foundation for the optimum design of ultrasonic motor ’ structural parameter
本文还利用分析软件,全面地分析了定子圆环各个尺寸参数对特征频率的影响,为超声波电机结构参数的优化设计提供了理论依据。 |
| 8. | By performing fourier transformation , the relationship between the turbulent intensity of the particle and that of the carrier fluid was obtained which makes clear that particle size , specific gravity , velocity gradient , and the characteristic frequency of energy - containing eddies are four basic influencing parameters . it is proven theoretically that under certain conditions , the stream - wise and transverse particle turbulent intensities exceed those of the carrier fluid . based on the equations of two - phase flow , the presence of fine sediment suspension is shown to attenuate the turbulent intensity of the water
通过对细小颗粒在剪切流场中运动方程的fourier分析，得到了颗粒脉动强度和流体脉动强度之间的定量关系，表明颗粒粒径、颗粒密度、流速梯度以及紊动场含能旋涡的特征频率是影响颗粒脉动强度的主要因素，首次从理论上证明了在一定条件下，颗粒在纵、垂向的脉动强度均会超过相应的流体脉动强度，为已有的实测资料提供了合理的解释。 |
| 9. | It shows that hard layers barely affect the ground motion and can thus be neglected in general . the soft layers , on the other hand , can influence the ground motion greatly , i . e . , seismic response will decreases when the period less than 0 . 1s and it increases when period greater than 0 . 3s , but it will not change significantly for the long period over 3s . therefore the whole effect of the soft layers on earthquake ground motion in fact depends on the characteristic frequencies input
研究结果表明，硬夹层的影响很小，一般情况下，可以不予以考虑；软夹层有较显著的影响，其影响主要表现为：对周期小于0 . 1s的高频段反应减小，对周期大于0 . 3s的较长周期段反应增大，而对周期长达3s及以上周期段反应几乎无影响，因此，软夹层对场地地震反应影响的总体作用是增大还是减小反应，取决于计算基底输入地震动的频谱特性。 |
| 10. | Some conclusions are drawn : 1 ) effect of inertial force from superstructures on the lateral seismic response of single pile can not be ignored ; 2 ) the lateral seismic response of single pile induced by far - field earthquake are mainly affected by acceleration mass of superstructure > site eigenperiod . it increases with the increment of accele ration and mass of superstructure . as the site characteristic frequency approaches the self - oscillation frequency of the pile , sympathetic vibration occurs and the value of lateral seismic response reaches maximum ; 3 ) as the stiffness ratio of pile to soil increase , the relative displacement of pile to soil increases ; 4 ) the lateral seismic response of fixed - head pile is much smaller than that of free - head pile
将其解析解与具体的的抗震设防烈度和场地特征周期结合起来，计算分析了成层地基中单桩的横向地震响应，得到了以下结论： 1 )上部结构惯性力对桩的横向地震响应的影响不可忽略； 2 )成层地基中的单桩的横向地震响应主要受地震基本加速度、场地特征周期、上部结构质量的影响，随地震基本加速度、上部结构质量的增大而增大；场地特征频率越接近桩基自振频率，桩基地震响应越大，等于自振频率时，由于发生共振现象，桩基响应幅值最大； 3 )桩土刚度比越大，桩土之间的相对位移的幅值越大； 4 )桩顶固接的连接方式，可以有效地降低地震时单桩的横向地震响应。 |
