| 释义 |
DEFINITIVE EXAMPLES 权威例句〔catenary〕The curve theoretically formed by a perfectly flexible, uniformly dense, and inextensible cable suspended from its endpoints.垂曲线：理论上由一条极柔软、密度均匀且长度不变的缆绳从其两端间垂下而形成的曲线美国传统〔involute〕The curve traced by a point on a taut, inextensible string as it unwinds from another curve.切展线；渐开线：当一根绷紧而不能拉长的细线从一弧线上延展出去时在其上一点所画的弧线美国传统 |