An annular eclipse occurs when the moon does not cover the entire disc of the sun so that a ring of light encircles the shadow of the moon.

当月亮不能完全遮住太阳时，月亮影子的周围就会有一圈亮光，日环食就发生了。

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The pump comprises mainly of pump body, cover, impeller, shaft, seal ring, intermediate support, sealing and suspension assembly, etc.

泵主要由泵体、泵盖、叶轮、轴、密封环、中间支架、密封和悬架部件等组成。

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Former deputy leaves on the cover can reduce the imports of the vortex impeller and particle loss of the wear and tear on the seal ring.

前盖板上的副叶片可以减少叶轮进口的旋涡损失和颗粒对密封环的磨损。

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Amla duly went to his third Test century - all scored against New Zealand - before being caught in the cover ring on 103.

BBC: Super Steyn crushes hapless Kiwis

Ali would lean back on the ring ropes, cover his face with his forearms and let his opponent wear himself out in a flurry of punches.

CNN: From Charles Bierbauer

To make a gadget called the Can Pump N' Pour, a circular hard plastic ring with a rubber cover that keeps the fizz in opened soda cans, Davison engineers went through 30 different versions with its own moldmaking machines before getting the shape right.

FORBES: Inside InventionLand