| 单词 | amplitude |
| 释义 | Word Frequency amplitude(ˈæmplɪˌtjuːd) noun 1. greatness of extent; magnitude 2. abundance or copiousness 3. breadth or scope, as of the mind 4. astronomy the angular distance along the horizon measured from true east or west to the point of intersection of the vertical circle passing through a celestial body 5. Also called: argument mathematics (of a complex number) the angle that the vector representing the complex number makes with the positive real axis. If the point (x,y) has polar coordinates (r, θ), the amplitude of x + i y is θ, that is, arctan y/x Compare modulus (sense 2), See also Argand diagram 6. physics the maximum variation from the zero or mean value of a periodically varying quantity Word origin C16: from Latin amplitūdō breadth, from amplus spacious |
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