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

• 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。
• The symmetry of the circle, the square, and the face are associated with rotations or inversions in space.
  圆、正方形和人脸的对称与空间的转动和交换有关。
• 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。
• Farmers traditionally used long-term rotations of hay, pasture, and corn.
  农民以往长期实行干草、牧草和玉米轮作。
• Arcs: The parts of an articulated skeleton move as a result of joint rotations.
  弧线运动：连接的骨骼运动起来是分节进行的。
• All the physical properties should be identical except for the optical rotations of the two isomers ( enantiomers), which are of opposite sign.
  这两个异构体（对映体）除了旋光度有相反的符号之外，其他所有的物理性质都应该是完全相同的。
• Unless you're the one who assigned six diagrams on planetary rotations.
  除非是你画了六张行星自转图。
• 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。
• The TG70 steam turbine has a operation speed of9600 rotations per minute ( RPM).
  TG70型蒸汽透平的运转速度为每分钟9600转。
• 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。