短语词组短語annulus scraper 環形刮蠟器;詳細繙譯annulus test 環空試壓tubular annulus 琯牐環狀空間tooth annulus 齒圈;[機]環狀齒圈annulus valve 環形閥annuli annulus 的複數annulus incision 纖維環切開法secondary annulus 第二內齒輪 返回 annulus