英语词源
- torus (n.)
- 1560s, in architecture, "large, rounded molding at the base of a column," from Latin torus "a swelling, bulge, knot; cushion, couch."
权威例句
- 1. A torus can be obtained from a rectangle by identifying opposite sides.
- 环面可由矩形把其两对对边分别重叠起来而得到.
- 2. A piece of magnetic material, usually torus - shaped, used for storage.
- 一种供存储器使用的磁性材料, 其形状通常是环形曲面体.
- 3. They are portions of a sphere, a torus or a cone.
- 他们是一球形 、 环形或锥形的一部分.
- 4. Thus for a torus many new circumstances arise.
- 对于一个环管就有许多新的情形发生.
- 5. Topologically, then, a sphere and a torus are distinct entities.
- 所以就拓扑学而言, 球和环面是不同的东西.