n.

1. 广大，广阔
2. 充足，丰富
3. 【物】振幅
4. 【军】射程

n.

1. Physics  the maximum extent or magnitude of a vibration or other oscillating phenomenon, measured from the equilibrium position or average value.
2. breadth, range, or magnitude.
3. Astronomy  the angular distance of a celestial object from the true east or west point of the horizon at rising or setting.