静止吊环的英文：
stationary rings

stationary是什么意思：
a.
1.不动的；不增减的；定居的；常备军的
n.
1.不动的人（物）；常备军

stationary stay
中心架|固定支柱

He crashed into a stationary bus.
他撞了一辆停着不动的公共汽车。

A stationary ball in lawn bowling; a jack.
做靶子的球草地保龄球中的静止不动的球；作靶子的目标球

electrostatics refers to stationary arrangements of electrical charge
静电指的是电荷的静止分布。

This relates to a moving disc in contact with a stationary one
它针对的情况是一个运动的圆盘与另一个静止的圆盘相接触。

rings是什么意思：
n. ring的名词复数；铃声
v. ring的第三人称单数；给…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