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词汇 Annular ring
分类 英语词汇 英语翻译词典
释义

Annular ring

原声例句
CNN 10 暑期特辑

That leaves the annular ring of sun that can be visible in this weekend's celestial event.

这样一来,本周末的天象中就可以看到太阳的环形圈了。

英语百科

Tracheid

(重定向自Annular ring)
Tracheid of oak shows pits along the walls. It is longer than a vessel element and has no perforation plates.

Tracheids are elongated cells in the xylem of vascular plants that serve in the transport of water and mineral salts. Tracheids are one of two types of tracheary elements, vessel elements being the other. Tracheids, unlike vessel elements, do not have perforation plates.

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