従来技術

じゅうらいぎじゅつ

noun

•

existing technology, conventional technology, prior art

従	accompany, obey, submit to, comply, follow, secondary, incidental, subordinate
来	come, due, next, cause, become
技	skill, art, craft, ability, feat, performance, vocation, arts
術	art, technique, skill, means, trick, resources, magic