男女羞羞免费视频_日韩看片网站_不卡av一区二区_天天干中文字幕_波多野结衣亚洲色图_久久青青国产

3325英語網 單詞

pyrotechnic的意思

pyrotechnic

英 [,pa?r?(?)'tekn?k] 美 [,pa?r?'t?kn?ks]
  • adj. 煙火的;令人眼花繚亂的;出色的

pyrotechnic

中文詞源


pyrotechnic 煙花

pyro-,火,-technic,技術,詞源同technology.

英文詞源


pyrotechnic
pyrotechnic: [18] The Greek word for ‘fire’ was pūr (it came from the same prehistoric Indo- European source as English fire). It underlies a range of English words, including pyracantha [17] (etymologically ‘fire-thorn’), pyre [17], pyrethrum [16], and pyrites [16]. Pyrotechnic itself was derived from an earlier pyrotechny, which was originally used for the ‘manufacture of gunpowder, firearms, bombs, etc’. The application to ‘fireworks’ did not emerge until the 17th century.
=> fire, pyre, pyrites
pyrotechnic (adj.)
1704, "of or pertaining to fire;" 1825, "of or pertaining to fireworks," from pyro- + Greek tekhnikos "made by art," from tekhne "art" (see techno-). Figurative use attested from 1847. Related: Pyrotechnical (1610s, from pyrotechny "use of gunpowder," 1570s).

雙語例句


1. A method for determination of perchlorates content in pyrotechnic compositions was established.
目的〕研究建立測定煙火藥劑中高氯酸鹽含量的方法.

來自互聯網

2. A pyrotechnic its frequent than find another pyrotechnics.
與其流連一場煙火,不如尋找另一場煙火.

來自互聯網

3. Over - loading of strong flash pyrotechnic composite was studied by using drop hammer simulation device.
采用大落錘沖擊裝置模擬研究了強閃光煙火藥的過載能力.

來自互聯網

4. A new kind of pyrotechnic agent above regularities manufactured and compared with exiting pyrotechnic agent.
通過選擇最佳粒徑的材料,制備出新型發煙劑,并與目前使用的發煙劑產品作了比較.

來自互聯網

主站蜘蛛池模板: 国产三级视频在线 | 久久久久久亚洲精品 | 国产精品免费在线视频 | aaa成人 | 国产第四页 | 97人人干 | 精品国产一区二区三区久久久蜜月 | ww.av| 啪啪无遮挡 | 日本精品视频 | 色女人影院 | 久久理伦| 91精品一区二区三区蜜桃 | 亚洲美女在线播放 | 精品美女在线视频 | 一区二区三区视频免费在线观看 | 成人欧美一区二区三区黑人免费 | 日韩一级免费 | 国产亚洲一区二区三区在线观看 | 亚洲国产免费 | 自拍偷拍视频在线 | 久久久久久久久久久网站 | 久夜精品 | 黄色片在线观看视频 | 在线免费av网址 | 久久视频精品在线观看 | 长泽梓av | 亚洲福利在线播放 | 成年人的视频 | 四虎在线免费观看 | 欧美91在线| 国产成人免费观看视频 | 极品少妇av | 色亚洲色图 | www天天操| 日日狠狠久久偷偷四色综合免费 | 欧美综合一区二区三区 | 欧美视频久久久 | 波多野结衣中文字幕一区二区 | 亚洲男人在线 | 日韩欧美第一页 |