protoplanet中文什么意思
例句与用法
- In the meantime the protoplanet cores were proceeding to consolidate .
在此期间，原行星的核开始凝成。
百科释义
Protoplanets are large planetary embryos that originate within protoplanetary discs and have undergone internal melting to produce differentiated interiors. They are believed to form out of kilometer-sized planetesimals that attract each other gravitationally and collide.
详细百科解释
