annularis环状的annularadj.环状的；有环纹的annular fuel element环状燃料元件annular slide window环形滑动窗口Annular tank process内孔环形槽加工annular beam control环状电极束流控制annular sector ducts环状扇形通道annular protuberance脑桥annular phased array环形相阵annular incrustation环状被壳annular ball bearing向心球轴承,径向滚珠轴承,环形球轴承annular roller probe圆环滚轮测头