1. 介绍火药的火药英语作文
Gunpowder 火药
Handgun from the Yuan dynasty, circa 1300s.
The prevailing academic consensus is that gunpowder was discovered in the 9th century by Chinese alchemists searching for an elixir of immortality. By the time the Song Dynasty treatise, Wujing Zongyao was written by Zeng Gongliang and Yang Weide in AD 1044, the various Chinese formulas for gunpowder held levels of nitrate in the range of 27% to 50%. By the end of the 12th century, Chinese formulas of gunpowder had a level of nitrate capable of bursting through cast iron metal containers, in the form of the earliest hollow, gunpowder-filled grenade bombs.
In AD 1280, the bomb store of the large gunpowder arsenal at Weiyang accidentally caught fire, which proced such a massive explosion that a team of Chinese inspectors at the site a week later deced that some 100 guards had been killed instantly, with wooden beams and pillars blown sky high and landing at a distance of over 10 li (~ mi. or ~3.2 km) away from the explosion.
By the time of Jiao Yu and his Huolongjing in the mid 14th century, the explosive potential of gunpowder was perfected, as the level of nitrate in gunpowder formulas had risen to a range of 12% to 91%, with at least 6 different formulas in use that are considered to have maximum explosive potential for gunpowder. By that time, the Chinese had discovered how to create explosive cannonballs by packing their hollow shells with this nitrate-enhanced gunpowder.
2. 用英语介绍火药带翻译
正在使用发音
The formula of black powder is composed of sulfur, saltpetre and charcoal. Chemically, the three components are potassium nitrate (saltpetre), carbon (charcoal) and sulfur (sulfur
火药按化学角度来讲，组成三部分，木炭 硝酸钾 硫磺
火药是四大发明之一
Gunpowder is one of the four great inventions
几乎所有人都固定了一种配比——15份硝石，3份木炭和2份硫磺，这个配比到现代也一直在用，可谓“黄金比例”
Almost everyone has fixed a ratio of 15 parts of saltpetre, 3 parts of charcoal and 2 parts of sulfur, which has been used in modern times. It can be called the "golden ratio"
火药用途与领域
婚庆 节假 烟花爆竹 军工方面 子弹 炮弹
Gunpowder use and field wedding holiday fireworks firecrackers military bullets
3. 请问哪里能找到中国四大发明之一火药的英文介绍，给小学生的
Gunpowder 火药
Handgun from the Yuan dynasty, circa 1300s.
Main article: History of gunpowder
The prevailing academic consensus is that gunpowder was discovered in the 9th century by Chinese alchemists searching for an elixir of immortality. By the time the Song Dynasty treatise, Wujing Zongyao (武经总要), was written by Zeng Gongliang and Yang Weide in AD 1044, the various Chinese formulas for gunpowder held levels of nitrate in the range of 27% to 50%. By the end of the 12th century, Chinese formulas of gunpowder had a level of nitrate capable of bursting through cast iron metal containers, in the form of the earliest hollow, gunpowder-filled grenade bombs.
In AD 1280, the bomb store of the large gunpowder arsenal at Weiyang accidentally caught fire, which proced such a massive explosion that a team of Chinese inspectors at the site a week later deced that some 100 guards had been killed instantly, with wooden beams and pillars blown sky high and landing at a distance of over 10 li (~2 mi. or ~3.2 km) away from the explosion.
By the time of Jiao Yu and his Huolongjing in the mid 14th century, the explosive potential of gunpowder was perfected, as the level of nitrate in gunpowder formulas had risen to a range of 12% to 91%, with at least 6 different formulas in use that are considered to have maximum explosive potential for gunpowder. By that time, the Chinese had discovered how to create explosive cannonballs by packing their hollow shells with this nitrate-enhanced gunpowder.
4. 火药的英文是什么
火药 gunpowder现在完成时结构： have/has + 过去分词
5. 用英文写一段关于火药的资料！急！急！急！
Gunpowder was invented by the Chinese people, it has been one thousand years ago. The research began from the ancient alchemy gunpowder
The Tang Dynasty alchemists in Karata Muneyongjun first year (682 years) pioneered the sulfur volt fire method, with sulfur, saltpeter, and research into a powder, coupled with the soap slot (containing carbon). Tang Xian Zong Yuan and three years (808 years) and a fire like Cephas, with saltpeter, sulfur and aristolochic (containing carbon) with firing. These two formulations, are the three kinds of spices mixed together, we have the ingredients of gunpowder. The invention of the country has been more than one thousand years ago. The research began from the ancient alchemy gunpowder.
6. 英语“火药”的读音
你好！
火药
gunpowder 英[ˈgʌnpaʊdə(r)] 美[ˈɡʌnˌpaʊdɚ]
n. 火药; 有烟火药，黑色火药; 中国珠茶;
[例句]This statement has a strong smell of gunpowder.
这是一篇充满火专药味属的声明。
7. 用英文说出火药给人们带来的的好处
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.
8. 火药的英文简介
Gunpowder, also called black powder, is an explosive mixture of sulfur, charcoal and potassium nitrate, KNO3 (also known as saltpetre/saltpeter) that burns rapidly, procing volumes of hot solids and gases which can be used as a propellant in firearms and as a pyrotechnic composition in fireworks. The term gunpowder is also often used more broadly to describe any propellant powder used in firearms. Modern firearms do not use the traditional gunpowder (black powder) described in this article, but instead use smokeless powder. In this article, the terms gunpowder and black powder are used interchangeably.
Gunpowder is classified as a low explosive because of its slow decomposition rate and consequently low brisance. Low explosives proce a subsonic deflagration wave rather than the supersonic detonation wave proced by brisants, or high explosives. The gases proced by burning gunpowder generate enough pressure to propel a bullet, but not enough to destroy the barrel of a firearm. This makes gunpowder less suitable for shattering rock or fortifications, where high explosives such as TNT are preferred.
The term "black powder" was coined in the late 19th century to distinguish prior gunpowder formulations from the new smokeless powders and semi-smokeless powders. (Semi-smokeless powders featured bulk volume properties that approximated black powder in terms of chamber pressure when used in firearms, but had significantly reced amounts of smoke and combustion procts; they ranged in color from brownish tan to yellow to white. Most of the bulk semi-smokeless powders ceased to be manufactured in the 1920s.)[1][2][3]
Black powder is a granular mixture of
a nitrate— potassium nitrate (KNO3)—which supplies oxygen for the reaction;
charcoal, which provides fuel for the reaction in the form of carbon (C);
sulfur (S), which, while also a fuel, lowers the temperature of ignition and increases the speed of combustion.
Potassium nitrate is the most important ingredient in terms of both bulk and function because the combustion process releases oxygen from the potassium nitrate, promoting the rapid burning of the other ingredients.[4] To rece the likelihood of accidental ignition by static electricity, the granules of modern black powder are typically coated with graphite, which prevents the build-up of electrostatic charge.
The current standard composition for black powder manufactured by pyrotechnicians was adopted as long ago as 1780. It is 75% potassium nitrate, 15% softwood charcoal, and 10% sulfur.[5] These ratios have varied over the centuries and by country, and can be altered somewhat depending on the purpose of the powder. For instance, coarser grades of black powder, unsuitable for use in firearms but adequate for blasting rock in quarrying operations, is called blasting powder rather than gun powder; it is often made with the cheaper sodium nitrate substituted for potassium nitrate in proportions of 60% nitrate, 20% charcoal and 20% sulfur.[citation needed]
The burn rate of black powder can be changed by corning. Corning first compresses the fine black powder meal into blocks with a fixed density (1.7 g/cm³). The blocks are then broken up into granules. These granules are then sorted by size to give the various grades of black powder. In the United States, standard grades of black powder run from the coarse Fg grade used in large bore rifles and small cannons, through FFg (medium and smallbore arms such as muskets and fusils), FFFg (smallbore rifles and pistols), and FFFFg (extreme small bore, short pistols and most commonly for priming flintlocks). In the United Kingdom, the gunpowder grains are categorised by mesh size: the BSS sieve mesh size, being the smallest mesh size on which no grains were retained. Recognised grain sizes are Gunpowder 'G 7', 'G 20', 'G 40', and 'G 90'.
9. 火药英语怎么说
火药抄：gunpowder; powder ; 例句:它一直津津乐道发明的火药变成了人们日常使用的爆竹。 Its vaunted invention of gunpowder had spluttered into firecrackers。
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