The original is a wall-rattling frequency too low for us to hear.
它们的原声由于频率太低以至于人类无法听到。
What is the foundry's checking frequency for control of core shift and wall thickness?
工厂检验芯偏移以及壁厚的频率？
At the same axial location, wall temperature increases linearly as the engine frequency increases.
同一轴向位置处，壁温随爆震频率的升高而升高，并呈线性关系。
The thermal equilibrium time of wall temperature decreases linearly with the detonation frequency increasing.
壁温分布热平衡时间随爆震频率的升高而减小，且基本上呈线性关系。
This paper first presents an experimental procedure to analyze wall surface heat transfer process and derive wall surface heat transfer coefficient by frequency spectral analysis method.
首次提出了用频率谱分析法分析墙体表面换热过程及推导墙体表面换热系数的实验方法。
The ball mill′s rotational speed can only affect the impact force and frequency and has no influence on its separation point between balls and mill wall.
高能球磨机的转速不会影响磨球与磨筒壁的脱离点，只会影响磨球对粉体的撞击力及撞击频率。
For Moscow to the Great Wall Station circuit, the lower the frequency, the larger the fading depth.
莫斯科-南极长城站电路的衰落深度与频率、时间有关，频率低，其衰落深度大。
The statistics analysis, frequency analysis and correlation analysis were made with the wall pressure fluctuations signals.
对床体壁面压力波动信号进行了统计、频谱及自相关性分析。
The influences of wall on the frequency response of the bubble and the turbulent intensity of the bubble motion have been analyzed through frequency spectrum analysis method.
通过频谱分析，考察了壁面的存在对空泡频率响应特性和湍强度等方面的影响，并与壁面对固体颗粒运动的影响进行了比较。
The unsteady wall pressure characteristics such as delay and frequency were analyzed.
研究风洞非定常壁压的延迟与频率特性。
Now the low frequency noise has been paid more attention in modern city. It can run with long distance and penetrate through wall into human ears.
现代城市中的低频噪声已越来越引起人们的重视，低频噪声能够长距离奔袭和穿墙透壁直入人耳。
The natural frequency, modal shape and modal damping ratio of the typical structural of composite wallboard (rapid wall) system are got by dynamic behavior measurement.
通过实测复合墙板试点工程结构的动力反应，获得了结构的自振频率、振型和阻尼比等模态参数。
The wall out-of-plane frequency of vibration is obtained shaking by beating experiment. And the relatively high out-of-plane frequency of vibration is far from the earthquake predominant frequency.
通过敲击试验得到墙体出平面振动频率，该频率相对较高，远离地震动卓越频率。
High frequency with strong level induced by interacting shock wave to cavity wall was expressed in calculation.
计算中体现了空气冲击波与空腔壁作用后激发的强谱振幅高频冲击波。
In this paper, the frequency bandwidth characteristics analysis method of the narrow wall slotted-waveguide array is presented.
给出了波导窄边缝隙天线频带特性的分析方法。
Thtrough analysis the damage causes of coke oven end-flue wall, scientific and rational measurements are adopted to decrease the frequency of wall damaging and its repairing effectively.
通过探讨分析焦炉炉头墙面损坏原因，有针对性地采取科学、合理的措施，有效地降低了炉头墙面损坏和挖补频次。
Based on the experimental researches, the characteristic behavior of slab and wall frame with unbounded prestressing in the slab under low frequency cyclic loading have been studied.
进行了无粘结预应力板墙框架的反复荷载试验，对无粘结预应力板墙框架的工作特性、无粘结预应力筋在水平荷载下的变化规律进行了分析。
Based on the experimental researches, the characteristic behavior of slab and wall frame with unbounded prestressing in the slab under low frequency cyclic loading have been studied.
进行了无粘结预应力板墙框架的反复荷载试验，对无粘结预应力板墙框架的工作特性、无粘结预应力筋在水平荷载下的变化规律进行了分析。
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