• 1. pre-main sequence: 主序前
• 2. Pre-main-sequence star: 主序前星
• 3. pre-main sequence star: 主序前星 | 前主序星

更多释义

• 1.It is really possible that the Sun possesses a relic magnetic field of the pre-main sequence epoch in its radiative core.
  太阳剩余磁场是指形成于太阳主序星阶段之前，深藏在太阳辐射核内部的原始磁场。
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