amplitude
/ˈæmplɪtjuːd/noun
mass noun
1
- Physics the maximum extent of a vibration or oscillation, measured from the position of equilibrium【物理】波幅, 振幅。
1.1
- the maximum difference of an alternating electric current or potential from the average value（交流电, 电势）振幅。
2
- Astronomy the angular distance of a celestial object from the true east or west point of the horizon at rising or setting【天文】（天体）出没方位角
3
- breadth, range, or magnitude广度, 阔度; 量：
the amplitude of the crime of manslaughter lies beneath murder.
就罪行轻重而言, 过失杀人罪在谋杀罪之下。
4
- Mathematics the angle between the real axis of an Argand diagram and a vector representing a complex number【数】辐角, 幅角。
词源
mid 16th cent. （in the senses 'physical extent' and 'grandeur'）： from Latin amplitudo, from amplus 'large， abundant'.