环孔；环状垫圈；循环振铃

annual ring───[林]年轮

annual rings───[林]年轮

anchor ring───[机][船]锚环；[计]环面

annual rent───年租

annualising───按年计算

annualizing───v.（利息）按年度计算

annular gear───[机]内齿轮；环形齿轮

plurality of vertically long annular blanks 3 are punched out from the material 2 having a prescribed width, and the vertically long annular blanks 3 are formed on the annular ring-shaped member 1.───给定宽度的坯料2冲压出多个长度方向长的环状的毛坯3，将该长度方向长的 环状的毛坯3成形为圆环状的环状构件1。

planetary nebula, pictured above and designated Shapley 1 after the famous astronomer Harlow Shapley, has a very apparent annular ring like structure.───上图中的行星状星云叫做Shapley 1以著名天文学家Harlow Shapley的名字命名，它有非常明显的环状结构。

The connecting device does not require any additional sections engaging behind the annular ring (7).───不需要在环形凸缘（7）的后面设置附加区段。

styles deciduous, leaving an annular ring.───花柱落叶，留下的一个环状的圈。

An annular mold for curing an annular ring tread is disclosed.───一种治疗一环形胎面环模被披露。

Research on the Dual-frequency Annular-ring Microstrip Antenna for Fuze───引信双频环形微带天线的研究

Research on the Loaded Annular Ring Microstrip Antenna for Fuze───引信用加载环形微带天线的研究

Minimum annular ring for plated-though shall be 0. 002' p ' er side───镀通孔每一面的孔环最少应为0.002英寸

This particular planetary nebula, pictured above and designated Shapley 1 after the famous astronomer Harlow Shapley, has a very apparent annular ring like structure.