马达主频率外置，准确直观。
结果表明，该震源激发地震波的主频率比普通震源的有明显提高。
The results showed that the main frequency of the earthquake wave produced by the source is higher obviously than ordinary seismic explosive columns.
在此过程中，电机的供应频率是不变的。它总是与相关的主频率相同。
In this process, the supply frequency of the motor is not changed; it is always identical to the relevant mains frequency.
当周期物体的单胞空间频率交叉项比主频率项小到可忽略的程度时，角度限制失效。
If the cross terms of the spatial frequencies for the unit cell of periodical object are much smaller than the main frequency terms, the restriction of the Angle is not necessary.
通过算例，计算了在不同长细比条件下，剪切变形和转动惯量对固端梁的各阶主频率的影响。
From numerical example, the effect of shear deformation and rotatory inertia on the natural frequencies of the Timoshenko clamped beam is discussed under different slender conditions.
如主频率低到接近或等于多层建筑的自振频率，则有可能发生共振现象，致使多层建筑遭受严重破坏。
If the main frequency is near or equal to self vibration of multiplayer construction, the resonate may be occurred, then multiplayer construction will be severity destroyed.
用此种辨识方法获得的液体晃动的主频率和参预基频晃动液体的等效质量与理论计算和共振试验法得到的结果基本一致。
Mechanical parameters of sloshed liquid are obtained finally. The parameters determined by this method are fairly consistent with the results of theoretical calculation and …
结果表明，改进后仪器接收到的地震反射波主振幅、主频率、频带宽度、垂向分辨率及仪器记录信号的有效动态范围均有不同程度的提高。
The results show that the main amplitude, main frequency and frequency band of reflected wavelet and the effective dynamic range of system have different degrees of increase.
我们也使用床边记录系统，探讨胃音和胃电的关系，从研究结果可以得知，在胃音发生时，胃电的主频率将明显降低而主频率之功率则会有明显的增加。
We also use this system to study the relationship of gastric sound and EGG. The result showed that the dominant frequency decreased and the dominant power increased when the gastric sound appeared.
直至最近，这种状况都是靠提高时钟频率达到的，在我有生之年，我已看到处理器主频从几千赫兹上升至几吉赫兹。
Up until recently, this was accomplished by accelerating the clock speed, which has leaped from kilohertz to gigahertz in my lifetime.
从计算结果可知，轨道结构的横向振动频率较低，且钢轨与轨枕的横向振动主频相接近。
From the calculating results, the main frequency of rail and sleeper lateral vibration is low.
模态分析结果表明，边坡的固有频率远低于爆破震动的主频，因此不会产生共振现象。
The results of model analysis indicated that the resonance phenomenon would not occur because the slope inherent frequency is well lower than the main frequency of blasting vibration.
频谱分析表明测试信号中含有两个主频，分别对应发射探头的发射主频与测试面自振频率（采用ANSYS有限元程序作半空间体模态分析加以验证）；
The signal's amplitude spectrum reveals that there are two main frequency, the higher is the probe signal's dominant frequency and the lower is the testing plane's free vibration frequency.
根据薄互层地区地质特点，以及所要达到的分辨率的要求，确定了所要保护的主频频率和施工参数。
Based on the geological characters in thin interbedded area and request of resolution, we determined the primary frequency kept and the acquisition parameters used in our study.
根据薄互层地区地质特点，以及所要达到的分辨率的要求，确定了所要保护的主频频率和施工参数。
Based on the geological characters in thin interbedded area and request of resolution, we determined the primary frequency kept and the acquisition parameters used in our study.
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