因此，乐器的进化优化了它们的声学特性，且优化了乐器振动的方式，并将这些振动通过空气传到我们的耳膜。
So musical instruments evolved in ways that optimize their acoustical properties, how the instrument vibrates and sends those vibration through the air to our eardrums.
我们发现了不同类型的声带振动的不同结果。
We found the different results of different types of vocal fold vibration.
振动的模式决定了粒子的性质。
The mode of vibration determines the nature of the particle.
这是振动的例子。
物体发声时振动的次数叫做频率，计量单位是赫兹。
The number of vibrations an object makes while it's making a sound is called its frequency, which is measured in Hertz.
观察慢运动中振动的弹簧。
机械在工作期间振动的量级必须予以确定。
The level of mechanical vibration during operation must be determined.
这是一个振动的宇宙，你是一个振动的存在。
This is a Vibrational Universe and you are Vibrational Beings.
但是对于一些有低频振动的材料，如声学振动。
But for materials where you have vibrations, acoustic vibrations, those are low frequency.
但你确实必须停止抱着引起你降低你振动的思想。
But you do have to stop holding the thoughts that cause you to lower your vibration.
研究人员分析了所有来访者振动的频率、持续时间以及幅度。
Then the researchers analyzed the frequency, duration and amplitude of each visitor's vibrations.
使用自拍模式或者线控快门，以减少相机振动的影响。
Use the self-timer or a remote shutter release to minimise camera shake.
他们不用亲眼看着声带是怎样振动的，也不用知道弹奏乐器有多难。
They don't have to see how the vocal cords are vibrating, or know exactly how difficult it is to play the instrument.
这篇大气层振动的研究最近被发表在《地理研究》期刊上。
The atmosphere-vibrations study was published recently in the Journal of Geophysical Research.
错觉手机振动的反应就不太好解释了，可能有心理或神经方面的原因。
False vibrations are less well understood, however, and could have psychological or neurological sources.
分子仍旧，在振动的基态，大多数情况热能不足以激发振动。
So molecules might generally still be in the ground vibrational levels, thermal energy isn't enough to raise them in many cases.
但是很少人能够想象，它从一个男孩、一辆货车和一扇振动的窗户开始。
But few can imagine that it all began with a boy, a train and a vibrating window.
大卫·爱登堡：物理学家会告诉我，这把扶手椅根本就不存在，它只是振动的结果。
DA: a physicist will tell me that this armchair is made of vibrations and that it's not really here at all.
如果只有一种脉冲——两种的其中一种——与硅条产生共振，硅条只能停留于振动的状态。
If just one of the pulses - or neither of them - resonates with the strip then it remains in its existing vibrational state.
在地表，这种类似于低频声波的振动非常小，只相当于造成它们的垂直振动的幅度。
At ground level, such vibrations-akin to low-frequency sound waves-are very small, only about the size of the vertical motions that produce them.
光学原子钟振动的速度快得多，大约每秒500万亿次，因此把时间分成了更小的单元。
Optical atomic clocks oscillate much faster, at about 500, 000 billion cycles per second, and thus divide time into smaller units.
如果要在纤维上达到类似于弦在乐器上围绕其辐射轴振动的效果，科学家们需要更加精密的设计建构。
To allow a fibre to vibrate along its radial axis, like the strings on a musical instrument, a more complex architecture is required.
比如，当两个相近的音符同时响起时，会有一种让声音在强弱之间振动的干涉效应，使之形成一个“拍”。
For instance, when two very similar musical notes are played together, there's an interference effect that causes the sound to wobble between loud and soft, producing "beats."
在第24个周期开始前，人们通过太阳的扭转振动的位置和强度准确的预知了第24周期内太阳黑子活动的推迟。
Before cycle 24 commenced, the position and strength of the torsional oscillation correctly predicted the late arrival of this cycle's sunspot activity.
具体就是运用了一个叫做谐振耦合的现象。在此现象中，以相同频率随着电子频率一起振动的金属线圈能够高效的传输能量。
Specifically, it exploits a phenomenon called resonant coupling, in which metal coils that resonate at the same electrical frequency can exchange energy particularly efficiently.
无论是谁写的，著者清楚的了解振动和声音之间的关系：“振动的物体具有产生声音的能力。 ..旋就是其中的一个例子。
Whoever wrote it, the author had a clear understanding of the relationship between vibration and sound: “bodies that are capable of vibrating produce sounds . . . strings are examples of such bodies.”
布莱恩·葛林可能是超弦理论的支持者中最著名的一位了，超弦理论认为宇宙中的力和粒子是由11维空间中振动的微小的弦产生的。
Brian Greene is perhaps the best-known proponent of superstring theory, the idea that minuscule strands of energy vibrating in 11 dimensions create every particle and force in the universe.
木材密度的变化会影响振动，因此也会影响声音。
Variations in wood density affect vibrations, and therefore, sound.
木材密度的变化会影响振动，因此也会影响声音。
Variations in wood density affect vibrations, and therefore, sound.
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