満漢 まんかん偶数 ぐうすう官制 かんせいであれば
mankan gūsū kanseideareba

Noun
Da Copula

The "-eba" conditional form ("if/when…") of 満漢偶数官制

1. If it were Mankankan ōkansei…; If Mankankan ōkansei existed…

Ba Conditional