短語詞組短語main -sequence band 主序帶The Main Construction Sequence 主要施工順序main reaction sequence star 主序星helium main -sequence 氦主序main spectral sequence 主譜列main program sequence [計]主程序序列;主要程序步驟main reaction sequence 主序Main Construction Sequence 主要施工工序helium m main -sequence 氦主序 返回 main sequence