a mixture of potassium nitrate, charcoal, and sulfur in a 75:15:10 ratio which is used in gunnery, time fuses, and fireworks 同义词：powder,
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.See Nitroglycerine#History It is a mixture of sulfur, charcoal, and potassium nitrate (saltpetre)?with the sulfur and charcoal acting as fuels, while the saltpeter works as an oxidizer.
例句与用法
1.
This statement has a strong smell of gunpowder . 这是一篇充满火药味的声明。
2.
Sulphur is a constituent of gunpowder . 硫是火药的组分。
3.
Gunpowder was the lineal successor of the greek fire . 火药是希腊火的直接衍生物。
4.
Gunpowder is composed of sulfur, carbon, and potassium nitrate . 火药是由硫、碳和硝酸钾组成。
5.
Gunpowder was used in china as far back as the 11th century . 远在公元11世纪，中国已使用火药。
6.
For the space of half a year, the gunpowder lay as harmless as sand . 在半年的时间里，这火药象沙土一样放在那里没有出毛病。
7.
To burn without exploding, gunpowder must have an extra measure of charcoal . 如要燃烧时不爆炸，黑色火药中必须另加一些木炭屑。
8.
He used gunpowder to seize both on the underdeveloped continents of asia and africa . 他依仗着火药的力量在落后的亚、非洲进行掠夺。
9.
You'd soon get used to sitting on barrels of gunpowder if you had no armchair . 如果你没有椅子可坐，那么坐在火药桶上你也会处之泰然。
10.
Unless the ingredients are put together in just the right proportions, the gunpowder explodes when ignited . 如果不是按照非常适当的比例把配料拌合在一起，点火后黑色火药就会爆炸。
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