Those variables for which it holds (e.g., momentum and position, or energy and time) are canonically conjugate variables in classical physics.
那些具有的变量(如动量与位置,或能量与时间)是经典力学里的正则共轭变量。
英语百科
Conjugate variables
Conjugate variables are pairs of variables mathematically defined in such a way that they become Fourier transform duals of one another, or more generally are related through Pontryagin duality. The duality relations lead naturally to an uncertainty in physics called the Heisenberg uncertainty principle relation between them. In mathematical terms, conjugate variables are part of a symplectic basis, and the uncertainty principle corresponds to the symplectic form.