speculum в PONS речника

едноезични примери (не са проверени от PONS редакцията)

английски
For nearly 200 years speculum metal was the only mirror substance that could perform this task.
en.wikipedia.org
The drake also has a white speculum on its wings.
en.wikipedia.org
Four outermost primary wing-covert feathers feature white patches forming a distinctive speculum.
en.wikipedia.org
Speculum also had the unfortunate property of tarnishing in open air with a sensitivity to humidity, requiring constant re-polishing to maintain its usefulness.
en.wikipedia.org
Rest of body is greyish brown with a bright green speculum.
en.wikipedia.org
Glass was also more thermally stable than speculum metal, allowing it to hold its shape better through temperature changes.
en.wikipedia.org
The speculum is glossy black edged with buff.
en.wikipedia.org
In flight, pale blue forewing feathers are revealed, separated from the green speculum by a white border.
en.wikipedia.org
Speculum metal was very hard to cast and shape.
en.wikipedia.org
Juvenile birds resemble the female, but are less neatly scalloped and have a duller brown speculum with a narrower trailing edge.
en.wikipedia.org

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