unicursal
unicursal[ˌjuːnɪˈkəːs(ə)l]adjective- (Mathematics)relating to or denoting a curve or surface which is closed and can be drawn or swept out in a single movement
(数)单行曲线的,有理曲线的
语源- mid 19th cent.: from uni- 'one' + Latin cursus 'course' + -al
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