潤滑 [ㄖㄨㄣˋ ㄏㄨㄚˊ; run4 hua2] smooth oily sleek to lubricate ◄ ►
潤滑 じゅんかつ adjectival nouns or quasi-adjectives (keiyodoshi) noun (common) (futsuumeishi) smoothness lubrication ◄ ►