| 单词 | closed curve |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔Jordan curve theorem〕The theorem that states that every simple closed curve divides a plane into two parts and acts as the common boundary between them.约当曲线定理：每一简单封闭曲线分平面为两部分，且该曲线为两部分平面的公共边界的定理美国传统〔perimeter〕A closed curve bounding a plane area.周界：围绕一平面域的封闭性边界美国传统〔simply connected〕Of, being, or characterized by a surface that is divided into two separate parts by every simple closed curve within it.单连通的：一个被里面的闭曲线分成两个相隔部份的平面的、是这种平面的或以之为特征的美国传统〔toroid〕A surface generated by a closed curve rotating about, but not intersecting or containing, an axis in its own plane.超环面：由封闭曲线绕其所在平面某一轴旋转而生成的平面，这些旋转线都互不交叉或包含美国传统 |
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