特殊用法collecting annulus1.集水槽(叶片上去湿用)dense primary annulus1.行星传动第一级固定齿轮graphite annulus1.石墨环grouted annulus1.灌浆环带inlet annulus1.进汽环室nuclear pore annulus1.核膜孔环outer annulus1.外圆周pit annulus1.纹孔环pregenicular annulus1.膝前色环(直翅目)primary annulus1.初级齿圈secondary annulus1.第二内齿轮superior annulus1.上位菌环tooth annulus1.环状齿圈