原始 惑星 系 円盤 でした genshi waku seikeiembandeshita
genshi waku seikeiembandeshita
Noun
, Desu Copula
The polite past form of 原始惑星系円盤
1. Was a protoplanetary disk.
Past/Perfective
, Polite
, Astronomy
Word Pronunciation
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No variants available for this word.