presolarの例文

例文

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1. Presolar grains are not floating around the solar system by themselves.
2. To an extent, all bodies formed from the presolar nebula.
3. Some presolar grains in primitive meteorites consist of hibonite.
4. Hence presolar carbon and carbide grains were discovered first.
5. Over billions of years, clouds of gas, molecules and presolar grains accumulate.