UC知道请英语高手拔刀相助阿
来源：百度知道 编辑：UC知道 时间：2024/05/15 15:56:31
Sound is transmitted in the form of pressure waves. These
waves are created by oscillation of particles of air—that is,
air particles being displaced from and returning to an equilibrium
position. As the particles are displaced, they bump
into surrounding particles which bump into others and so
on. In this manner, sound is transmitted through the atmosphere.
Sounds are heard when the pressure waves of displaced
air particles strike the eardrum, causing it to vibrate.
The physical properties of a sound can be measured in terms
of three basic components: magnitude, frequency, and duration.
Although these components can be directly measured,
useful measures of sound are complicated both by environmental
variables and the way in which people hear sound.
waves are created by oscillation of particles of air—that is,
air particles being displaced from and returning to an equilibrium
position. As the particles are displaced, they bump
into surrounding particles which bump into others and so
on. In this manner, sound is transmitted through the atmosphere.
Sounds are heard when the pressure waves of displaced
air particles strike the eardrum, causing it to vibrate.
The physical properties of a sound can be measured in terms
of three basic components: magnitude, frequency, and duration.
Although these components can be directly measured,
useful measures of sound are complicated both by environmental
variables and the way in which people hear sound.
声音以压力波的形式传播.这些波是由空气中的粒子振动产生的,即--空气粒子不断移动到一个新的平衡位置.这些粒子移动的时候会撞击其周围的粒子,而周围的粒子又会撞击周围的粒子,如此不断.声音以这种方式在大气中传播.当空气粒子移动产生的压力波撞击到耳鼓膜时,使耳膜发生振动,声音就被听到了.声音的这种物理属性可以用三个基本参量来衡量:大小、频率和周期。尽管声音的这些参量可以直接被测出，但是从环境的不确定性和人们听声音的方法这两方面来看，要作出有效的测量是很复杂的。
以压力波浪的形式，声音被传送。 这些
波浪由微粒空气是，空气微粒的动摆
创造被偏移从和返回到
平衡位置。 当微粒被偏移，他们碰到
碰到其他等等的周围的
微粒。 如此，声音通过大气被传送。
声音听见，当被偏移的空气微粒压力
波浪碰撞鼓膜时，造成它振动。
声音的有形资产可以被测量用三种
基本成分的术语： 巨大、频率和期间。
虽然这些组分可以直接地被测量，
声音有用的措施由人们听见
声音的环境变量和方式复杂化。
声音是以压缩成波的形式传播的。空气粒子的振动产生了波，也就是说，空气粒子不断地被从原始平衡位置所置换。当这些粒子位置转移时，它们相互撞击各自周围的粒子。通过这种方式，声音在大气中得到传播。当被压缩的波振动到人们的耳膜时，就可以听到声音了。声音的物理属性可以用它的三种基本特性来作为测量标准，量级，频率，持续时间。尽管这些属性可以被直接测量，但是声音的测量是很复杂的，它会受到环境变量以及人们听声音的方式的影响。