英文英文字典
英文英文字典
古腾堡计划中的在线英语-英语词典
结果
Annulus的结果
Annulus
(n.)
A ring; a ringlike part or space.
Annulus
(n.)
A space contained between the circumferences of two
circles, one within the other.
Annulus
(n.)
The solid formed by a circle revolving around a line which
is the plane of the circle but does not cut it.
Annulus
(n.)
Ring-shaped structures or markings, found in, or upon,
various animals.