perihelia
基本解释
- n.近日點(最高點)
英汉例句
- 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。