speculum 在《牛津英西词典》中的词汇

词条speculum在英语»西班牙语中的译文 (跳至 西班牙语»英语)

speculum <pl speculums or specula> [ ˈspəkjələm, ˈspɛkjʊləm] 名词

词条speculum在西班牙语»英语中的译文 (跳至 英语»西班牙语)

speculum 在《PONS词典》中的词汇

词条speculum在英语»西班牙语中的译文

到英语_美式英语

单语范例(未经PONS编辑处理)

英语
In old texts, the speculum may also be referred to as a diopter or dioptra.
en.wikipedia.org
He started building his own reflecting telescopes and would spend up to 16 hours a day grinding and polishing the speculum metal primary mirrors.
en.wikipedia.org
For nearly 200 years speculum metal was the only mirror substance that could perform this task.
en.wikipedia.org
Four outermost primary wing-covert feathers feature white patches forming a distinctive speculum.
en.wikipedia.org
Rest of body is greyish brown with a bright green speculum.
en.wikipedia.org
The eyelid is held open with a speculum to minimize blinking during surgery.
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
The speculum is glossy black edged with buff.
en.wikipedia.org
After much experiment, he chose an alloy (speculum metal) of tin and copper as the most suitable material for his objective mirror.
en.wikipedia.org
Speculum metal was very hard to cast and shape.
en.wikipedia.org

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