英语释义

1. a comparatively slow gyration of the rotation axis of a spinning body about another line intersecting it so as to describe a cone

片语

precessional torque进动力矩

rotor precessional motion转子进动

precessional period岁差周期

precessional cycle岁差周期

precessional constant岁差常数

precessional torgue进动力矩

precessional motion[天] 进动

precessional resonance进动共振

precessional rate进动角速度

英汉例句

• once they lock in (which i see in about 3-4 years), as we reach the fulcrum in the precessional cycle, they will then seek a rooting, and there will be a period of equalization or balance.

  以前它们是锁闭的（我们进入尚需3-4年），当我们到达岁差周期 运动的支点的时候，它们开始寻找固定的场所，将有平等和平衡的一段时期。

• a natural and quantitative law does exist between the azimuth of the imbalance of the rotor and its spin angle, precessional angle and its phase angle.

  转子不平衡量所在的方位与转子的自转角、进动角、相位角三者之间内在的定量关系。

• these indicate that the tropical climate, such as the variations of the thermocline and east asian monsoon in the scs, is externally controlled by the precessional radiation.

  这说明更新世热带地区的气候变化，比如南海南部的温跃层深度变化和东亚季风的演化，主要受地球轨道的岁差控制。

• this criterion is reasonable because it is not expressed in terms of the precessional velocity, but the angular velocity of the permanent rotation.

  该判据用永久转动角速度的大小而不是进动角速度的大小作为判别準则，较为合理。