... 1 太阳加热系统 solar heating system 2 只有太阳能系统 solar-only system 4 太阳能预热系统solar preheat system ...
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solar only system HZ 太阳能自力体系
This transformed our view not only of the solar system but also of the importance of sending a spacecraft to Pluto.
这不仅改变了我们对太阳系的认识,也使我们意识到向冥王星发射飞船的重要性。
Of course, we now know that the planets, including Earth, revolve around the Sun, and that the solar system is only a tiny part of the universe.
当然,我们现在知道,包括地球在内的行星都围绕太阳公转,而太阳系只是宇宙的一小部分。
For more than 300 years, we thought Saturn was the only body in the solar system with rings.
在300多年的时间里,我们一直认为土星是太阳系唯一拥有光环的天体。
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