正常物质 meaning in Chinese

koinomatter

Normal matter in galaxy clusters is mostly in the form of hot gas and stars
银河束里的正常物质主要是热气体和星星。
Normal matter and galaxy cluster is mostly in the form of hot gas and stars
正常物质和银河系主要在热气体和星星形式中。
It is still a mystery , cosmologists say , why the universe seems to be overwhelmingly composed of normal matter
宇宙学家说，它仍然是一个秘密,宇宙为什么像是由压倒性正常物质组成。