振动器

A silent communications system in which nonaural carriers, in the very low or very high audio-frequency range or in the adjacent ultrasonic frequency spectrum are amplitude- or frequency-modulated with the desired intelligence and propagated acoustically or vibrationally, for inducement into the brain, typically through the use of loudspeakers, earphones, or piezoelectric transducers.

一个沉默的联系是不承载听觉，在非常低或非常高音频范围里，或在邻近的超音速的频谱中，这是广阔的-或带有期望的智能并且传播声学的频率调节或振动，为了刺激大脑内部，典型的是通过利用扬声器，耳机，或压电式换能器。

Vibration reduction effect of parametric oscillation of stayed cable with linear viscous damper under simple harmonic support motion is investigated in the paper neglecting cable-bridge interaction.

本文以斜拉索为研究对象，忽略索桥之间的耦合作用，研究在支座沿弦向方向的周期运动下，线性粘滞阻尼器对斜拉桥拉索参数振动的减振效果。

They provide theoretical proof for the advanced study and effective control of stable operation state in rotor system.

研究表明：挤压油膜阻尼器的引入，可以有效地抑制系统的振动，提高系统的运动稳定性。

Its symmetric axis is vertical to the vibrating direction of the controlled machine or structural object.

阻尼器的对称轴线与被控机器或结构物的振动方向相垂直。

Meanwhile, the paper analyses the influence of vibration occurring in wheel sympathetic vibration and low temperature condition to noise.

同时，分析了车轮共振型振动和低温环境等因素对悬架系统中减振器噪声的影响。

STRUCTURE: Titanium and composites used extensively, with particular emphasis on corrosion resistance; fully articulated three-blade coaxial contrarotatmg rotors have all-composites blades with carbon fibre and glass fibre main spars, pockets (13 per blade) of Kevlar-type material, and filler similar to Nomex; blades have non-symmetrical aerofoil section; each has ground-adjustable tab; each lower blade carries adjustable vibration damper, comprising two dependent weights, on root section, with further vibration dampers in fuselage; tip light on each upper blade; blades fold manually outboard of all control mechanisms, to folded width within track of main landing gear; rotor hub is 50% titaniuin/50% steel; rotor brake standard; all-metal fuselage; composites tailcone; fixed incidence tailplane, elevators, fins and rudders have aluminium alloy structure, composites skins; fins toe inward approximately 25°; fixed leading-edge slat on each fin prevents airflow over fin stalling in crosswinds or at high yaw angles.

结构：钛和复合材料广泛使用，耐腐蚀性能与特别强调，充分阐明三叶片转子同轴contrarotatmg有碳纤维和玻璃纤维的主要棒材全复合材料桨叶，口袋（每刀片13）凯夫拉型材料，类似的Nomex纤维填料；叶片非对称机翼部分，每有地面可调选项卡，每降低叶片振动阻尼器进行调节，包括两部分依赖重根，在机身进一步减振装置；小费每个刀片上轻；刀片倍手动舷外所有控制机制，折叠宽度内的主起落架的轨道；转子中心为50％titaniuin/50％钢；转子制动标准；全金属机身，复合材料tailcone，固定发生机尾，电梯，蛙鞋和方向舵的铝合金结构，复合材料的皮肤；鳍鳍在每个脚趾向内约25 °；固定领先的板式翅片防止了侧风或气流停滞在高偏航角度。

Design and manufacture of potentiometer, encoder, joystick, trimming, vibration motor, variable resistor, switch, crystal oscillator, phone jack, PCB assembly etc.

Co。， Ltd。；宝华精密电子有限公司-设计及生产电位器，编码器，摇杆，调微电位器，振动马达，可变电阻，开关，晶振，耳机插座， PCB组装等。

A series of seismographs are arranged with their direction of vibration along the generators of a cone with vertical axis .

一组地震仪的振动方向是与具有垂直轴的锥体拾震器方向一致的。

In this paper, analyses for static equilibria of various aerial crossing pipeline structures and dynamic characteristics of cable-stayed bridges are referenced. According to the fluid-induced vibration of cylindrical structure theory, the finite element method is adopted to analyze dynamic response of the aerial crossing pipeline structure supported by inclined cables with vertical expansion joint during the pigging process.

本文在参考各种管道跨越结构的静力平衡分析和斜拉公路桥的动力特性分析基础上，根据流体诱发圆柱结构振动理论，采用有限单元法对具有立式补偿器的斜拉索管道跨越结构清管时的动力响应进行分析。

The motivation for these studies is to better understand the Anderson localization of sound and vibrations in composite media, as well as their numerous engineering applications such as elastic/acoustic filters, vibrationless environments for high-precision mechanical systems or the design of new transducers.

而这些研究也具有实际的应用价值，例如，我们可以设计出一种新的弹性波的滤波器、波导器，以及给高精密的仪器设备提供一个无振动的环境等等。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。