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

• They work in 12-hour shifts, on rotations determined by their departments.
  他们的工作为12个小时一班，由他们的部门决定轮换次序。
• 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。
• 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。
• 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。
• 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。
• The crankshaft makes three rotations for each rotation of the rotor.
  转子每转一周，曲轴转3周。
• 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。
• But it's also the case for molecular rotations, translations.
  同时它也适用于分子的转动，平动。
• 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。
• 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。