| 释义 |
vertical earth rate vertical earth rate[′vərd·ə·kəl ′ərth ‚rāt] (navigation) To compensate for the effect of earth rate, the rate at which a gyroscope must be turned about its vertical axis to permit the spin axis to remain in the meridian; it is maximum at the poles, zero at the equator, and varies as the sine of the latitude. |