The dynamic loads of engine in tractor-trailer unit are classified into four kinds with frequency structure.
拖拉机挂车机组工作时的动态载荷按其频率结构可分成四类。
Using frequency spectrum analysis of phase function to calculate its auto power spectrum can reflect its frequency structure.
利用相函数的频谱分析求其自功率谱，可以反映它的频率结构。
The results showed that vibration strength and frequency structure of any spot of the combine are different with the different working conditions.
研究结果表明：小麦联合收获机任一点的振动强度、频率结构随工况不同而变化。
Then, we analyze the field-distribution in the High-frequency structure with helix cavity and gain the distribution function in the interaction space.
接着，对螺旋腔高频结构的场分布进行了深入的分析，得出了互作用空间的高频场表达式。
This paper introduced a local cosine-basis based dictionary, it segments the time frame and ADAPTS speech signal's changes of the time-frequency structure.
构造局部余弦基字典，其对时间轴的分割适应于语音信号时频结构的变化，而且有较高的时频分辨率。
A method of local spectrum analysis is presented to process a bearing vibration signal based on the vibration frequency structure of a deep groove ball bearing.
在深沟球轴承振动频谱结构分析基础上，引入了振动频谱的局部分析方法。
Analyzing the Galileo frequency structure and signal design, performance and interference, this article demonstrates the presented Galileo frequency and signal plan is superior to GPS.
分析了伽利略系统的频率结构和信号设计、性能及干扰，阐明了伽利略系统的频率和信号设计比GPS更具优势。
This article shows the universal result of the frequency structure, which is connected with the chopped signal of the sine wave by convolution, this has guidance meaning to filter design.
本文以卷积为工具给出了正弦交流斩波信号谱结构的普适结果，这对滤波器的设计有指导意义。
It does this by fitting small piezoelectric acoustic sensors to parts of the structure to detect the particular frequency of noise caused by a crack in aircraft-grade aluminium.
把小型压电声传感器安装到这种构造部位上，检测由航空级铝材裂纹所致的特定频率的噪音，靠这样就能监测飞机裂纹。
Chemists have long known that atoms in a molecule vibrate at a particular frequency, depending on their overall molecular structure.
化学家们早就知道，在分子中原子以特定的取决于整体分子结构的频率振动。
Although very similar in size and general appearance to R. blasii, the horseshoe (nasal) structure differs and it calls at a completely different echolocation frequency.
尽管在个头和外观上都与布氏菊头蝠十分相似，但是它们的鼻子构造不同，因而其回声定位频率截然不同。
This frequency depends on the fine-structure constant.
该频率取决于精细结构常数。
In this paper, a method for shifting the natural frequency of a structure to a desired value by modifying the local stiffness and mass parameters is proposed.
本文对修改结构局部刚度和质量参数，从而使其具有给定固有频率的动力修改问题提出了一种求解方法。
The modal frequency of the packaging structure increases with the elastic modulus of potting material.
封装结构的模态频率随着灌封胶弹性模量的增大而增大。
At the resonant frequency it appears that the structure has no apparent stiffness.
在共振频率上，结构好像没有明显的刚度。
It shows that the self-pumping type and pump-probe types bistable switching can both be realized in the same structure, and the latter can separate the pump and signal in frequency and space.
发现在二维耦合腔结构中，可以实现信号自泵浦和泵浦-信号两种类型的双稳态开关，且后者具有使泵浦和信号在频率和空间相分离的优点。
The result show that the system possesses the features of simple structure and excellent control characteristics etc without detecting the slip frequency of the rotor's magnetic field.
结果表明：不检测转子磁链的滑差频率矢量控制系统具有结构简单、控制性能优良等特点。
This article introduces the frequency speed constant pressure water supply system controlled by PLC, presenting its hardware structure, the design of PLC program and its application.
介绍了用PLC控制的变频调速恒压供水系统的基本原理，给出了系统的电气线路和PLC程序设计，并在实际中得到了应用。
The relationship between frequency and prestress, ratio of rise to span of tensioned cable and membrane structure are also studied.
系统分析了索膜结构自振特性与预应力、矢跨比、索初始应力等的关系。
Computer simulation shows that the control of fuzzy variable structure can increase the robustness, solve the problem of shiver at high frequency, and improve the stability of small disturbance.
计算机仿真结果表明，采用模糊变结构附加励磁控制方法可以提高鲁棒性、解决高频抖动问题，并能够很好地改善电力系统的小干扰稳定性。
To be more objective in the present study, the author also conducts statistics of the frequency of each sentence structure in police interrogation.
为了使本研究更加客观，作者还对警察讯问中每种句子结构所出现的频率进行统计。
In view of the limitation of safety and efficiency of current water-heater, the basic structure and principle of a supersonic-frequency induction water-heater are introduced.
针对目前热水器的安全，效率等局限性，本文介绍了一种超音频感应加热热水器的基本结构和原理。
The asphalt pavement structure, road surface types and thickness of the rural roads are suggested for the various action frequency of the equivalent axle load.
沥青路面结构，路面种类和厚度的农村道路，提出了各项行动的次数，相当于轴重。
The viscoelastic damper reduces the dynamic amplitude of bridge structure through change the frequency and damper ratio.
粘弹性阻尼器通过改变桥梁结构的频率和阻尼比来达到减振目的。
However, phase speed depends on plasma frequency and structure dimension, and very slow waves can exist in very small sized waveguide.
然而，波的相速依赖于等离子体频率和结构尺寸，并且非常慢的波可以存在于非常小尺寸的波导中。
This method has some advantages such as simple structure, high scan frequency, high resolution and good linearity.
该解调方法具有结构简单、扫描频率高、分辨率好、线性度好等优点。
In this article we introduce the basic principle of supersonic measure distance, and analyze the structure and frequency characteristic of supersonic sensor.
本文介绍了超声测距的基本原理，对超声传感器的结构及频率特性进行了分析。
Besides, in case the vortex shedding frequency is equal to a vibration frequency of structure, the rod will occur the vortex shedding resonance or called vortex resonance.
并且当漩涡脱落频率与杆件的固有频率接近时，杆件会产生漩涡脱落共振或称涡激共振。
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。
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。
应用推荐