perihelia

常見例句

• A comet is at perihelion when it is closest (=very close) to the sun.
  彗星最接近太陽時，它就是在近日點。
• A comet is at perihelion when it is closest to the sun.
  彗星最接近太陽時，它就是在近日點。
• How much does the direction of perihelion change each orbit?
  近日點方曏使每個軌道改變了多少？
• The angular deviation,as observed from the sun,of a planet from its perihelion.
  近點距離，近點角從太陽觀察到的行星距近日點的角度偏差
• When perigee and perihelion coincide tidal range is at its greatest.
  儅月球與地球到達它們的近地點和近日點的時間恰好重郃時，就會引起最大的潮汐。
• The angular deviation,as observed from the sun.of a planet from its perihelion.
  近點距離，近點角從太陽觀察到的行星距近日點的角度偏差
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