A push button extends into the end ring and has a lens cap.

一个按钮伸进该端环，并具有一个透镜盖。

youdao

A magnetic conducting ring made of soft magnetic steel surrounds the end ring of rotor and there is a secondary winding on the magnetic conducting ring.

一种笼型转子及其电动机，用一软磁性钢材制成的导磁环围绕转子端环，导磁环上有次级绕组。

youdao

Their appeals for an end to the violence had a hollow ring.

他们要求停止使用暴力的呼吁并无诚意。

《牛津词典》

Such was the clamour to support Joe that the organisers issued a warning about crowds being squeezed out at the south end of the ring.

BBC: Calzaghe fails to convince

Fox will also call for an end to the ring-fencing of budgets for the NHS, schools and international development, and the end of universal benefits such as the pensioners' winter fuel allowance.

BBC: liam fox

As the textured "On Freddie Roach" shows, that solitary fight doesn't end upon leaving the ring.

WSJ: Jason Gay: On the Periphery of Boxing Madness; Freddie Roach, Manny Pacquaio; Floyd Mayweather Jr.