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。
• At least three full rotations must be performed.
  必须完成至少3圈完整的平转。
• 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。
• 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。
• 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。
• 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。
• Dynamic changes of soil enzyme activities during growth of corps under different tillage types and rotations
  不同耕作和轮作方式下作物生育期内土壤酶活性的动态变化特征
• She started with two-week rotations and stayed in touch via low-cost Internet telephony service Skype.
  一开始，她两周往返一次，并通过低成本的互联网电话服务skype保持联系。
• 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。