nappe
/næp/
📖 中文释义
- n. (圆锥曲面的)叶
🧩 词形变化
复数 nappes
📘 English Definition（英文释义）
- n. Sheet; surface; all that portion of a surface that is
- continuous in such a way that it is possible to pass from any one point
- of the portion to any other point of the portion without leaving the
- surface. Thus, some hyperboloids have one nappe, and some have two.