rotations

英 [rəʊˈteɪʃənz]

美 [roʊˈteɪʃənz]

n.  旋转; 转动; (旋转的)一周，一圈; 轮换; 交替; 换班
rotation的复数

柯林斯词典

• N-VAR 旋转;转动
  Rotationis circular movement. Arotationis the movement of something through one complete circle.
  1. ...the daily rotation of the earth upon its axis.
     地球每天绕地轴自转
• N-UNCOUNT 轮流;轮班
  Therotationof a group of things or people is the fact of them taking turns to do a particular job or serve a particular purpose. If people do somethingin rotation, they take turns to do it.
  1. He grew a different crop on the same field five years in a row, what researchers call crop rotation...
     他连续5年在同一块地里种植不同的作物，研究人员称之为轮作。
  2. Once a month we met for the whole day, and in rotation each one led the group.
     我们每个月聚在一起一整天，轮流担任领队。

双语例句

• During the past four lectures, we have dealt with angular momentum, torques and rolling objects and rotations.
  前四讲中，我们讨论过角动量，力矩滚动物体及旋转。
• We must establish crop rotations which will help to minimize disease.
  我们必须建立有助于减少疾病的作物轮作制。
• For geophysical purposes it is customary to use solar rotations of 27. 0 day.
  为适应地球物理学的需要，习惯上以27.0日为太阳自转周期。
• The action of eating matter speeds up the pulsar's spin to hundreds of rotations a second.
  这种吸取物质的行为使得脉冲星的自转速度加速至一秒种几百次。
• Rotations, if it's a diatomic molecule, will be two different degrees of freedom.
  对于双原子分子，转动有两个不同的自由度。
• At least three full rotations must be performed.
  必须完成至少3圈完整的平转。
• The rotations due to applicable factored loads;
  因适用系数荷载引起的转动；
• There are two main arguments for this: avoiding gimbal lock, and allowing smooth interpolation between rotations.
  这里我有两个主要的理由：避免万向节锁，在旋转时允许平滑插值。
• Crop rotations with legumes help maintain fertility and soil microbiology.
  与豆类轮作可以保持土壤的肥力和微生态。
• You will see more about rotations on the problem set.
  在题集里面你们会看到更多关于旋转的问题。