precession

英 [prɪˈsɛʃən]

美 [priˈsɛʃən]

网络  进动性; 运动; 歳差運動; 进动; 旋进

化学

COCA.28486

英英释义

noun

• the act of preceding in time or order or rank (as in a ceremony)
  Synonym:precedenceprecedency
• the motion of a spinning body (as a top) in which it wobbles so that the axis of rotation sweeps out a cone

双语例句

• Secondly, canonical transformations, Hamilton-Jacobi theory and action-angle variables were investigated, which made a foundation to study the precession of planets.
  其次，我们介绍了经典力学中的正则变换、哈密顿-雅可比理论及作用角变量方法，为后面研究行星进动问题提供了方法。
• The precession frequency goes up.
  旋进的频率上升了。
• And now you will see an instantaneous increase in the precession frequency.
  你们能看到旋进频率的，瞬间上升。
• And if I make the torque higher, then the precession frequency will go up.
  如果我使力加大，旋进的频率就会上升。
• The research status and recent progress of the spin wave emitting are reviewed, which is caused by spin-transfer torque and magnetization precession in the nanoscale magnetic multilayer.
  回顾了纳米磁多层结构中电流感应自旋矩传输和电流驱动磁化矢量进动引起的自旋波发射等新量子效应的研究现状及发展。
• On the Precession of Planets with Action-angle Variables and General M(?) ller Transformation
  作用角变量方法研究行星进动和广义M（？）ller变换
• That gives you the frequency of the precession.
  从而得到了旋进的运动频率。
• The sixth chapter made an experiment study upon the fluid oscillation characteristics of vortex precession flowmeter.
  论文第六章对旋进旋涡流量计的流体振动特性进行实验研究。
• Spin precession and NMR.
  自旋的进动与核磁共振（NMR）。
• Precession is of utmost importance since it causes relatively rapid changes in coordinates d and б.
  岁差之所以特别重要是因为它引起坐标d和б比较迅速的变化。