可展曲面 kězhǎnqūmiàn developable surface Origin Definitions Defs Strokes Stroke Words Sentences Sents 可 kě adjectiveauxiliary worth worth; worthy of; used as a prefix to mean "-able" or "-worthy"展 zhǎn verb to spread out to open up; to unfold; to stretch; to expand曲面 qūmiàn curved surface curved surface; camber; the path or surface formed by a moving line in space