Word · Frequency #10877
amplitudes
振幅；波幅；幅值
amplitudes is the plural of amplitude.
核心释义
常用于物理、数学及信号分析
The maximum absolute value of a varying quantity, such as the displacement of a wave from its central position.
- 1.
某物尺寸的量度,尤指宽度或广度；宏大,量级。
The measure of the size of something, especially its width or breadth; largeness, magnitude.
- 2.
(物理学)周期波的最大位移
(physics) the maximum displacement of a periodic wave
- 3.
曲线或函数(尤其周期函数)垂直分量的最大绝对值。
The maximum absolute value of the vertical component of a curve or function, especially one that is periodic.
- 4.
丰富的特性
the property of copious abundance
- 5.
某变化量的最大绝对值。
The maximum absolute value of some quantity that varies.
- 6.
巨大规模
greatness of magnitude
- 7.
天体出没时,真东或真西点与太阳或恒星中心之间的地平弧。出时称东出,没时称西没；在赤道以北或以南时分别偏北或偏南。
The arc of the horizon between the true east or west point and the center of the sun, or a star, at its rising or setting. At the rising, the amplitude is eastern or ortive: at the setting, it is western, occiduous, or occasive. It is also northern or southern, when north or south of the equator.
- 8.
真东或真西点与通过任一天体或物体的垂直圈脚之间的地平弧。
The arc of the horizon between the true east or west point and the foot of the vertical circle passing through any star or object.
- 9.
衡量抛射体抛出距离的水平线；射程。
The horizontal line which measures the distance to which a projectile is thrown; the range.
- 10.
体操运动员完成动作时身体的活动范围。
The range of motion of the gymnast's body while performing a skill.
- 11.
生物能生存的环境条件范围。
The range of environmental conditions in which an organism can survive.
广大；巨大；规模；丰富；充足；大量；动作幅度；活动幅度；生态幅；生存耐受范围；天体出没方位角；出没幅角
用法In use
The amplitude of a sound wave determines how loud it sounds.
用法提示：此处 amplitude 为名词，意为波的振幅。
By looking at the oscilloscope, we can read the amplitude of the electrical signal.
用法提示：名词，指信号波形的幅值。
As the pendulum lost energy, the amplitude of its swing became smaller.
用法提示：名词，这里指摆动幅度。
the amplitude of [something]
常用于科技语境，表示波、信号等对象的振幅或幅值。
The amplitude of the wave gradually decreased as it crossed the ocean.
波浪的振幅在横渡大洋时逐渐减小。
an amplitude of [number/measurement]
给具体数值时，amplitude 前用不定冠词 an，后面接 of 加量度。
相关词与表达Connections
搭配Collocations
- wave amplitude
- 波幅；波的振幅
- The wave amplitude decreased as the swell crossed the bay.波浪进入海湾后，波幅逐渐减小。
- amplitude modulation
- 振幅调制；调幅
- Amplitude modulation is still used for long-distance radio broadcasts.远程无线电广播仍使用振幅调制。
- amplitude of vibration
- 振动幅度
- The amplitude of vibration grows when the motor runs at high speed.电机高速运转时，振动幅度会增大。
- large amplitude
- 大振幅；大幅度
- The bridge swayed with a large amplitude during the storm.暴风雨中，大桥以大幅度摇摆。
- signal amplitude
学习提示Learner notes
记忆技巧Memory Tip
记忆联想：amplitude 以 A 开头，A 尖尖像波峰，因此 amplitude 指波峰到平衡位置的高度——振幅。
语境与语域Context & Register
语域：formal 常见场景：physics class、academic paper、engineering manual amplitude 作“振幅”讲时是正式的技术用语，通常用于物理学、数学和工程技术等专业语境，日常口语中很少用到。
发音与拼写Pronunciation & Spelling
All six words share the final '-itude' spelling and the /-tud/ sound, so they rhyme with amplitude. Beware of spelling-based guesses: 'amplitude' begins with /ˈæmplə/, not the 'ample' /ˈæmpəl/ sound.
一起学习词形Learn the forms together
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.