词族 · precession
词形变化
英语词源
- precession (n.)
- 1590s, from Late Latin praecissionem (nominative praecissio) "a coming before," from past participle stem of Latin praecedere "to go before" (see precede). Originally used in reference to calculations of the equinoxes, which come slightly earlier each year.
权威例句
- 1. He then accounts for the precession of the equinoxes.
- 然后他解释分点岁差.
- 2. This gyroscopic motion is called precession.
- 此陀螺运动叫做进动.
- 3. The tilting of the gyro continues until the erection torque balances the torque producing the precession.
- 陀螺继续倾斜直至修正力矩与产生进动的力矩平衡.
- 4. Finally, physics about precession sorted by precession mechanism are presented curtly.
- 最后, 试介绍进动物理方面的基本知识,以进动机制分类对进动做了总结.
- 5. Then, a simple discussion on solitary precession cone semi - angle follows.
- 并对进动锥角是否有独立性做了一点讨论.