短語詞組短語eukaryotic expression vector constructing 真核表達載體構(gòu)建expression vector constructing 表達載體構(gòu)建recombinant vector constructing 重組載體構(gòu)建constructing vector 載體構(gòu)建group constructing vector 組構(gòu)造向量 返回 vector constructing