annulus的复数形式怎么拼写？

Uniformity of annulus flow is important in well cementation.偏心环空流动的均匀性在固井工程中有重要影响.Original, I come to road of Xiamen annulus island.原来, 我来到了厦门环岛路.Much on the annulus element piece what symptom to basically treat?多西环素片主要治...

n.环面...

annulus的音标：annulus的英式发音音标为：['ænjʊləs]annulus的美式发音音标为：['ænjuləs]...