annulus 的定义
plural an·nu·li [an-yuh-lahy], /ˈæn yəˌlaɪ/, an·nu·lus·es.
- a ring; a ringlike part, band, or space.
- Geometry. the space between two concentric circles on a plane.
- the veil remnant on a mushroom stalk.
- a growth ring, as on the cross section of a tree trunk, that can be used to estimate age.
更多annulus例句
- Stonecutters Bridge in Hong Kong, which opened in December 2009, featured giant towers composed of 32 stainless-steel segments wrapped around a concrete annulus.
- That meant the region in which the center would balance was a ring, or annulus.
- Thus a hot hoosh is preparing in the central vessel side by side with the melting of snow for cocoa or tea in the annulus.
- Mettenius had laid stress upon various characters, but especially on the oblique annulus as distinctive.
- A distinctive feature is the incomplete annulus of the sporangium.
- The sporangia have very short stalks, and are not provided with an annulus at all.
- The rocky annulus which surrounds it is very lofty and precipitous, and at one point reaches a height of 17,300 feet.