Molecular clouds play an integral role in the prestellar evolutionary sequence of interstellar matter. 分子云在星际物质的星前期演化序列中起着不可缺少的作用。
The Yuhuashan rock body in Jiangxi is a high-level composite plutonic complex,which hascompositional and structual evolutiOnary sequences. 玉华山岩体是一个高位复式深成杂岩体，具成分和结构演化序列。
