symmetry

• The rule of combination of symmetry operations is successive performance of them .
  对称操作的组合规则，是逐次地去运用它们。
• Time reversal invariance is a very useful symmetry in subatomic physics .
  时间反演不变性在亚原子物理中仍然是一种很有用的对称性。
• Two types of viral symmetry have been recognized, the cubical symmetry and helical symmetry .
  已经证实病毒有两种对称型，即立体对称和螺旋对称。
• Symmetry operations are geometrically defined ways of exchanging equivalent parts of a molecule .
  对称操作几何上定义为交换分子中等价部分的方式。
• 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。
• Mundry uses the same principle for three layered systems with linear expansion or rotational symmetry .
  穆恩德瑞将同一原理应用于具线性延伸或转动对称的三层状系统。
• Planetary nebulae are a type of isolated gaseous nebulae possessing a fair degree of bilateral symmetry .
  行星状星云是一类孤立的气体星云，具有相当程度的双侧对称性。
• Identical autopilots are used to control the pitch and yaw motions if the missile has two planes of symmetry .
  如果导弹有两个对称面，则使用相同的自动驾驶仪控制俯仰和偏航运动。
• inspection of the molecule shows that no other symmetry operations besides these six are possible.
  考察分子，除了这六个对称操作以外没有其它对称操作了。
• For further analysis of seismological interest, specific symmetries of the media need to be considered .
  为了进一步分析在地震学方面具有重要意义的问题，必须考虑介质的特定对称性。