rotation

英 [rəʊˈteɪʃn]

美 [roʊˈteɪʃn]

n.  旋转; 转动; (旋转的)一周，一圈; 轮换; 交替; 换班

复数：rotations　

CET4CET6TOEFLTEM4计算机

BNC.6205 / COCA.5230

牛津词典

noun

• 旋转；转动
  the action of an object moving in a circle around a central fixed point
  1. the daily rotation of the earth on its axis
     地球每天的自转
• （旋转的）一周，一圈
  one complete movement in a circle around a fixed point
  1. This switch controls the number of rotations per minute.
     这个开关控制着每分钟的转数。
• 轮换；交替；换班
  the act of regularly changing the thing that is being used in a particular situation, or of changing the person who does a particular job
  1. crop rotation/the rotation of crops (= changing the crop that is grown on an area of land in order to protect the soil)
     庄稼的轮作
  2. Wheat, maize and sugar beet are planted in rotation .
     小麦、玉米和甜菜是轮流种植的。
  3. The committee is chaired by all the members in rotation .
     委员会由所有成员轮流主持。

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。

英英释义

noun

• the act of rotating as if on an axis
  1. the rotation of the dancer kept time with the music
  Synonym:rotary motion
• a planned recurrent sequence (of crops or personnel etc.)
  1. crop rotation makes a balanced demand on the fertility of the soil
  2. the manager had only four starting pitchers in his rotation
• a single complete turn (axial or orbital)
  1. the plane made three rotations before it crashed
  2. the revolution of the earth about the sun takes one year
  Synonym:revolutiongyration
• (mathematics) a transformation in which the coordinate axes are rotated by a fixed angle about the origin

双语例句

• We believe that sunspots and many other solar activities are due to this differential rotation.
  我们相信太阳黑子和不少太阳的活动，皆是由较差自转所造成的。
• This paper studies the vibration stability of rectangular shaft on variable rotation.
  本文研究了扁平轴变速回转时的振动稳定性问题。
• Rotation of the hands and forearms so that the palms face upward.
  手和前臂的旋转以致手掌朝上。
• Creates a translation, rotation and scaling matrix.
  创建一个平移、旋转和缩放矩阵。
• Bearing this can compensate for rotation between the shaft and housing suitable The skew.
  轴承由此可以补偿旋转轴和轴承座之间适量的偏斜。
• The direction of rotation must be observed when loosening and tightening.
  松开和拧紧时必须注意旋转方向。
• The spiral horn of sheave and rotation speed had influence on sowing performance.
  说明了槽轮的螺旋角度和转速对排种性能的影响。
• In the last chapter, rotation and translational motion is studied to formation reconfiguration.
  最后一章探讨了同时进行平移运动和旋转运动的编队重构问题。
• The E-vector makes one complete rotation as the wave advances through one wavelength.
  当波前进了一个波长之后，E矢量转了一整周。
• Untimed rotors rely on precision and accuracy of the screw forms for proper mesh and transmission of rotation.
  时序的转子依靠精确和适当网格和旋转的螺旋形式传输的准确性。