二に成せい文ぶん系けいMeaningsNoun1. binary systemKanji used二two成become文written sentence系lineageComposed of二にtwo; 2Numeric成せい文ぶんwritten expression; writingNoun系けいsystem; lineage; group; corollary; system (range of strata that correspond to a particular time period); (taxonomical) seriesNoun