振动

In wind instruments the sound is produced by a vibrating air column.

管乐器的声音是由振动的气柱产生的.

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Electrodynamic vibration equipment is a most widely used vibration equipment in vibration test.

电动振动设备是振动试验中运用的最广泛的振动设备.

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In regard of the vibration problems arising from more and more large-span light footbridges, in this paper, walking load, human-induced bridge vibration mechanism, vibration comfortability assessment, and footbridge vibration control by TMD has been investigated deeply.

针对目前越来越多的大跨轻型人行桥出现的振动问题，本文对人行荷载、人致桥梁振动机理以及振动舒适度评价和采用TMD抑制人行桥振动等内容进行了研究。

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The eccentric mass type vibration generators are bolted to the platform.

偏心量型式的振动发生器锚固在台身上.

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The amplitude of the vibration determines the loudness of the sound.

振动幅度的大小决定声音的大小.

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Tom's heavy footsteps upstairs make the old house vibrate.

楼上汤姆的沉重脚步振动了整幢旧楼房.

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In order to effectively reduce the vibration of the air chute and preheater of 130t/ h boiler, based on the measurement, theoretical analysis and calculation, the source, the distribution and the frequency characteristic of the vibration are identified.

针对130t/h锅炉冷风道和空气预热器振动十分严重的问题，通过现场测试和理论分析计算，识别其振动产生的原因、振动分布及频谱特性。

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Damping wakes possible finite steady-state vibration amplitude at resonance.

在共振时,阻尼可能限制稳定振动的振幅.

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The oscillation property of two dimension impulsive time-delay direct control systems is studied.

讨论二维脉冲时滞直接控制系统的振动性质,给出线性反馈控制下振动与非振动的实例.

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The system vibration characteristics is analyzed by comparing the curve of system vibration, the phase curve, Poincare cross-sectional view and the FFT graph. Study the influence of different parameters on the system vibration.

通过对比系统振动响应时间&位移曲线、相曲线、Poincare截面图及FFT曲线图，分析系统振动特点，并研究不同参数变化对系统振动的影响。

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Recently, a concept of vibration dose value ( VDV) was suggested to evaluate human vibration.

近几年耒，为了更好地描述人体对振动的响应，有人建议用振动剂量值（VDV）未评价人体振动。

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The vibration of shafting is one of the main vibrations of internal combustion engine. It is a complex 3-D space vibration, torsional, longitudinal and lateral vibrations are coupling.

内燃机轴系振动是内燃机各种振动中的主要振动之一，其振动形式是较复杂的三维空间振动，主要包括同时耦合发生的扭转、纵向和弯曲振动。

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However, heating energizes the vibrational, rotational, and electronic motions all at once.

但是, 加热会一下子把振动 、 转动和电子运动统统加强.

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The free vibration analysis is conducted by using arch-frame structure model for brick arch floor, from this the local vibration and the whole vibration of the arch are studied.

对砖拱楼盖，采用拱框结构力学模型进行了自由振动分析，并探讨了局部振动和整体振动等同题。

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Envision the conductor as an assemblage of driven , damped oscillators.

把导体看成是大量受迫阻尼振动的振子的集合.

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The blade is clamped and excited into some mode of vibration.

叶片夹好后,被激发进入某种振动状态.

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The experiment showed that VDV was more sensitive to impulsive vibration, especially to those whose crest factors were more than 6, and possessed a larger changing range.

实验表明，振动剂量值比振动加速度均方根值具有较大的变化范围，振动剂量值对脉冲型振动特别是具有较高峰值因素的振动反应更灵敏。

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The diaphragm vibrates , thus setting the air around it in motion.

膜片振动,这使得周围的空气也动荡起来.

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Its oscillation depends on the strength of the gravitational field.

它的振动幅度取决于引力场的强度。

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On an oscilloscope, you can see an electrical current oscillate up and down.

在示波器上面你可以看到一股电流上下振动.

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The characteristics and definition of simple harmonic motion are discussed, and the relationship between vibration in general physics mechanics and micro-vibration in theoretical mechanics as well.

简谐振动是振动的基础。本文讨论了简谐振动的特点，简谐振动的定义以及普通物理力学中振动与理论力学中的微振动之间的关系。

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In consideration of the effect of liquid dynamic pressure on the tubing string vertical vibration, the differential equation and frequency equation for describing the vibration are set up.

考虑液动压力对油管柱纵向振动的影响，建立了油管柱纵向振动微分方程，并给出了这种情况下油管柱纵向振动的频率方程。

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According to the mechanical principle, a general vibration condition may be always resolved into a spherical stress shaking and deviatoric stress shaking. A spherical stress shaking test apparatus is constructed in order to study soil dynamic properties under spherical stress shaking.

鉴于复杂振动荷载下地基和土工建筑物动态反应的研究存在一定的困难，因此将复杂振动荷载分解为球应力振动与偏应力振动进行研究。

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A vibrating membrane in the ear helps to convey sounds to the brain.

耳膜的振动帮助声音传送到大脑.

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It's important to tighten up the wheels properly, otherwise they vibrate loose and fall off.

把轮子拧紧是很重要的，否则它们会因振动松动、脱落。

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The article has deduced a non-linear vibrational differential eguation for an unbalanced rotor under the dynamical coupling of bending by torsion with the efforts of torsional vibration to bending vibration under consideration.

考虑扭转振动对弯曲振动的影响，推导建立了弯扭动力耦合情况下，不平衡转子的非线性振动微分方程，然后用算例分析了这种情况下转子的振动特性。

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The multi-pantograph current collection is a kind of mechanical vibration with multi-movable vibration sources, and these vibration sources together with the catenary compose a complex vibration system.

多弓受流是一个多移动振动源的机械振动，这些振动源和接触网一起组成一个复杂的振动系统。

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Guided missile body before launched is influenced by the vibration of aircraft, creating elastic vibration.

说明了导弹发射前弹体受到载机振动的影响, 产生弹性振动,振动对弹体结构、内部仪器造成损坏.

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The strings of a piano vibrate when the keys are struck.

钢琴的琴键一弹琴弦就振动出声.

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As to the number of degenerate vibrations some further considerations are necessary.

关于简并振动的数目的问题,还需要做进一步的研究.

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