| 释义 |
horizontal earth rate horizontal earth rate[‚här·ə′zänt·əl ′ərth ‚rāt] (navigation) The rate at which the spin axis of a gyroscope must be tilted about the horizontal axis to remain parallel to the earth's surface to compensate for the effect of earth rate; horizontal earth rate is maximum at the equator, zero at the poles, and varies as the cosine of the latitude. |