环形显示的英文：
Ring Indicator
n. 环形物；戒指；拳击场；铃声，钟声
v. 包围；成环形；按铃；敲钟；回响；打电话
There was a ring at the bell.
铃声响了。
The impulse ring is a composite, magnetized ring.
脉冲环是一个合成磁化圈。
That ring is certainly the cheese.
那只戒指无疑是精品。
The lost ring was never found.
遗失的戒指再也没有找到。
multiple (double) annual ring
复年轮
n. 指示器；标志，迹象；转向灯；指示剂
Image quality indicator(IQI)/image quality indication
像质指示器
switch point indicator
道岔尖轨表示器
bumping post indicator
车档表示器
What is the titude director indicator?
什么是姿态指示器？
Moderate exercise is indicated.
适当的运动也是需要的。