接吻, 密切, 接触英释中释na point at which two branches of a curve have a common tangent, each branch extending in both directions of the tangent
1 The concept of band osculation is presented by analyzing surface contact types..通过对曲面接触类型分析,提出了带状密切的概念。
更新时间:2025-02-22 15:15:43