国产精品久久久久久久久久东京,亚洲视频免费播放,少妇人妻精品一区二区三区视频,日韩一级品

好房網(wǎng)

網(wǎng)站首頁教育百科 >正文

關(guān)于火的英語作文(有關(guān)火藥的英語作文80詞左右)

2022-06-07 21:25:02 教育百科來源:
導(dǎo)讀相信目前很多小伙伴對(duì)于有關(guān)火藥的英語作文80詞左右都比較感興趣,那么小洋洋今天在網(wǎng)上也是收集了一些與有關(guān)火藥的英語作文80詞左右相關(guān)的...

相信目前很多小伙伴對(duì)于有關(guān)火藥的英語作文80詞左右都比較感興趣,那么小洋洋今天在網(wǎng)上也是收集了一些與有關(guān)火藥的英語作文80詞左右相關(guān)的信息來分享給大家,希望能夠幫助到大家哦。

1、Gunpowder,also known since the late 19th century as black powder,was the first chemical explosive and the only one known until the mid-1800s.
It is a mixture of sulfur,charcoal,and potassium nitrate (saltpeter)—with the sulfur and charcoal acting as fuels,while the saltpetre works as an oxidizer.Because of its burning properties and the amount of heat and gas volume that it generates,gunpowder has been widely used as a propellant in firearms and as apyrotechnic composition in fireworks.。

本文到此結(jié)束,希望對(duì)大家有所幫助。


版權(quán)說明:本文由用戶上傳,如有侵權(quán)請(qǐng)聯(lián)系刪除!


標(biāo)簽:

熱點(diǎn)推薦
熱評(píng)文章
隨機(jī)文章