The track it creates is called the path of annularity.
它产生的路径被称作环食带。
2
The longest duration of the annularity on China's territory would be 8 minutes and 17 seconds in Ruili, Yunan Province, Cheng said.
程卓称中国本土最长的日环食将在云南省瑞利发生，时长8分17秒。
3
An approach of mapped with bipolar coordinate and reduce noisy is used to normalize iris image in this paper, and annularity image with different centre is mapped onto bipolar coordinate efficiently.