同义词: annulate annulated circinate circular ringed ring-shaped doughnut-shaped
以上来源于: WordNet
ADJ ring-shaped; of or forming a ring 环状的; 环的或形成环的
annular flow [化]环状流
annular space [机]环隙;环形空隙
annular gap 环状间隙
annular eclipse [天文学]日环食;[天文学]环蚀
annular gear 内齿轮;环形齿轮
ring-shaped , circinate
词根: annular
annulate 有环纹的;由环组成的;环状的
annulated 环状的;有环纹的(等于annulate)
See annular eclipse pictures.
详见日环食图片。
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WHAT IS AN ANNULAR ECLIPSE?
什么是日环食?
Such events, which only blot out the middle of the Sun, are known as annular eclipses.
像这样,太阳中部被遮盖的天象,就叫做日环食。
The actual annular portion, in which the sun appears as a thin ring, will be about four minutes long, Newmark said.
CNN: Upcoming solar eclipse to project 'ring of fire'
The last annular eclipse appeared in the United States in 1994.
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