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- Balloons provided military aerial observation sites in the 19th century and were used in the 20th century by scientists such as Auguste Piccard to gather high-altitude data. 19世紀時(shí)曾利用氣球做軍事空中觀(guān)測站,20世紀時(shí),科學(xué)家?jiàn)W古斯特?皮卡德用氣球收集高空資料。
- With a wingspan of 8.5 feet and weight of 12.5 pounds, Puma is a lightweight, hand-launched UAV that provides aerial observation at line-of-sight ranges up to 10 kilometers. “美洲獅”翼展寬8.;5英尺、重12
- Aerial navigation by visual identification of landmarks. 地標領(lǐng)航用可視地標來(lái)進(jìn)行飛機航行
- The birds perched on the television aerial. 鳥(niǎo)停在電視天線(xiàn)上。
- The picture is much clearer with the new aerial. 裝上新天線(xiàn)后畫(huà)面清晰多了。
- Her designs have a strong visual appeal. 她的設計在視覺(jué)上很有感染力。
- He showed me some aerial photographs. 他給我看了一些空中拍攝的照片。
- Telescopes and microscopes are visual instruments. 望遠鏡和顯微鏡是光學(xué)儀器。
- Near-sightedness is a visual defect. 近視是一個(gè)視力缺陷。
- Primary school teachers use a lot of visual aids. 小學(xué)教師使用大量的視覺(jué)教具。
- He was taken into hospital for observation. 他被送進(jìn)醫院觀(guān)察。
- Careful observation convinced them that is was so. 仔細的觀(guān)察使他們相信情況是這樣的。
- It's basically wrong to have observation taken off from hearsay. 以道聽(tīng)途說(shuō)作為意見(jiàn)的根據是根本錯誤的。
- He is a man of little observation. 他是個(gè)觀(guān)察力極差的人。
- They decided to put him under observation. 他們決定監視他。
- Some joker's been playing around with my car aerial! 哪個(gè)愛(ài)胡鬧的人擺弄我汽車(chē)上的天線(xiàn)了！
- He was under observation by the police. 他受到警方嚴密監視。
- Photographic aerial reconnaissance especially of military targets. 空中照相偵察空中照相偵察，尤指軍事目的的
- The gale blew down a TV aerial from the roof. 大風(fēng)刮倒了屋頂上的電視天線(xiàn)。
- A device that gives information in a visual form, as on a screen. 顯示器，指示器一種以視覺(jué)方式顯示信息的裝置，如熒光屏顯示
