rotation

• The difference in type of information is probably not present during the first third of a test rotation .
  在头三分之一的试验周期内，资料的类型可能不存在差别。
• Positive frequencies are produced by anticlockwise rotation and negative frequencies by clockwise rotation .
  正频率是逆时针旋转产生的，而负频率是顺时针旋转产生的。
• The more general case, when the shaft rotation may be significant, is dealt with in chapter 6 .
  在较为一般的情况下，轴的旋转可能有显著影响，这种情况将在第六章中讨论。
• Positive frequencies are produced by anticlockwise rotation and negative frequencies by clockwise rotation .
  正频率是用逆时针旋转来产生，而负频率是用顺时针旋转来产生。
• The centrifugal force caused by the earth's rotation decreases from a maximum at the equator to zero at the poles .
  地球自转产生的离心力从赤道的最大值降低到极地的零值。
• It is clear that for non-concurrent force systems, similar statements could be made with regard to rotations .
  可清楚地看出对于非共点力系考虑转动时也可以作出相似的结论。
• The opposite movement of downward rotation is brought about through the action of the rhomboids and the levator scapulae .
  和下旋相反的活动是通过菱形肌、提肩岬肌产生的。