n. 链, 悬链线, 链状物

a. 悬链线的

[电] 双垂曲线

[ noun ]
the curve theoretically assumed by a perfectly flexible and inextensible cord of uniform density and cross section hanging freely from two fixed points
<noun.shape>

Catenary \Cat"e*na*ry\, Catenarian \Cat`e*na"ri*an\, a. [L.
catenarius, fr. catena a chain. See {Chain}.]
Relating to a chain; like a chain; as, a {catenary} curve.


Catenary \Cat"e*na*ry\, n.; pl. {Catenaries}. (Geol.)
The curve formed by a rope or chain of uniform density and
perfect flexibility, hanging freely between two points of
suspension, not in the same vertical line.