• The inventor Henry Bessemer discovered that directing a blast of air at melted iron in a furnace would burn out the impurities that made the iron brittle.

    发明家亨利·塞默发现熔炉铁水直接就会烧掉使变脆杂质

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  • Factories that burn coal still polluted the air with a lot of black smoke.

    煤的工厂仍然产生大量的黑烟污染空气。

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  • Wind turbines do not burn oil or coal and do not pollute the air.

    力涡轮机不烧石油和煤炭,也不会对空气产生污染。

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  • But if we burn coal in the 21st century using 20th century technologies, our air will be foul and disruptions to our climate will threaten us all.

    但是如果我们21世纪20世纪的技术我们空气污染,我们的气候被破坏,这将使所有受到威胁

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  • In the air was the smell of burning human flesh; human beings burn surprisingly quickly.

    空气弥漫着人体烧焦味道,人的躯体的燃烧速度快得惊人

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  • Nitrogen is removed from the air, enabling the fuel to burn in pure oxygen.

    氮气空气去除,使得燃料能够氧中燃烧

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  • The trouble was that at high altitudes where there is less oxygen, the propeller blades had little air to bite and engines still needed oxygen to burn petrol.

    麻烦海拔的地段,氧气稀薄,螺旋桨叶片没有空气使其扇动,而且发动机燃烧汽油需要氧气。

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  • Plus, cigars often burn for longer periods of time, which leads to more secondhand smoke in the air.

    此外由于雪茄比起香烟通常燃烧更长时间因此会产生更多二手烟雾

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  • Many of them burn wood, waste and dung indoors for heating and cooking. The soot released into the air as a consequence is also a climate-changer because, being dark, it absorbs heat.

    很多农民通过燃烧木头垃圾粪便取暖烧饭,排放大气中的煤烟因为黑色而吸热同样会造成气候变化。

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  • Mountain air contains less oxygen than air at lower altitudes, so breathing it causes the heart to beat faster and the body to burn more energy.

    高山上空气氧量小于海拔地区所以呼吸心脏跳动地更快身体也会消耗更多能量。

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  • Both of these are fuels (they burn in air to form carbon dioxide and water, respectively).

    这两种产物都燃料燃烧之后产物分别是二氧化碳

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  • If your engine's wheezing and has to work harder bringing in the air it needs to burn fuel efficiently, it doesn't complain to you.

    如果爱车引擎杂音而且燃烧汽油时加入空气更加费劲时,并不抱怨什么。

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  • The pan must not be crowded. Enough air space must be left between each piece of food or it will steam rather than brown, and its juices will escape and burn in the pan.

    不能一下子放太多食物里,必须在食材留出充足空间否则变成蒸不是了,而且食物里的汤汁跑出来,锅子里蒸发掉。

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  • Air slipping along the fuselage moves slower, so the engines ingest less oxygen and burn less fuel.

    机身上流动空气速度减慢所以引擎吸氧量减少从而节省燃料

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  • Tasked with improving the nation's air transportation, NASA wants airplanes to burn 40 percent less fuel than a 777 by 2020 and 70 percent less by 2030.

    为了提升航空运输美国国家宇航局希望2020年前,飞机现有“777”号减少40%燃油2030年,减少70%。

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  • The software can work out, for example, the exact rate at which a plane should rise into thinner air (to reduce drag) as fuel burn makes it lighter.

    比如能够计算飞机云层(减轻阻力上升的准确率,以减轻飞机自身重量

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  • Power plants and houses that burn coal add greatly to air pollution.

    燃烧煤炭发电厂房屋大大加重空气污染

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  • Hydrogen and air mixtures, within the flammable range, can explode and may burn with a pale blue, almost invisible flame.

    可燃范围内空气混合物可能爆炸可能燃烧火焰蓝色几乎看不见

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  • The harmful air pollution of boiler smoke is introduced and the measure to burn coal fully and reduce the pollution is adopted.

    介绍了锅炉烟气大气污染危害采取锅炉节措施,使燃料充分燃烧缓解污染的方法。

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  • In order for fire to burn, air is necessary, hence the necessity of the breath.

    为了燃烧空气必要的因此呼吸必要性

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  • Can burn, vapor and air to form an explosive mixture, the explosion limit of 7%-73% (volume).

    燃烧蒸气空气形成爆炸性混合物爆炸极限7% - 73%(体积)。

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  • Hydrogen is added to the air mixture, causing it to burn easily and powerfully while the oxygen increases the octane value of the fuel.

    氢气添加混合空气中,可使其既容易很强力燃烧氧气会增加燃油辛烷值

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  • A fire requires fuel to burn, air to supply oxygen, and a heat source to bring the fuel up to ignition temperature.

    把火需要燃料燃烧空气提供氧气还有使燃料到底燃烧温度的热量

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  • Fuels can burn with air.

    燃料接触空气能够燃烧

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  • Meyer says there is evidence that people in chronically distracted jobs are, in early middle age, appearing with the same symptoms of burn-out as air traffic controllers.

    Meyer证据表明中年以前,长期分心状态下工作会出现精力耗尽相同症状空中交通管制员。

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  • Butt air is now being polluted by modern transportation, notably gas-powered automobiles, as well as electrical generators that burn fossil fuels and pour polluting chemical waste into the air.

    但是现在空气污染受到现代交通运输业的污染,尤其是天然气汽车以及燃烧矿物燃料发电机污染化学废物倾倒空气中。

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  • Deflagration is what happens when you burn a mixture of air and fuel at reasonably low pressure.

    爆燃时会发生什么刻录合理压力的空气燃料混合物

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  • If we burn them, they not only harm people, but (also) pollute the air.

    如果了这些树叶,不但会损害人体健康而且污染环境。

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  • Automobiles and factories burn gasoline and coal, which send certain chemicals into the air.

    汽车工厂燃烧汽油煤炭会释放有害化学物质。

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  • Automobiles and factories burn gasoline and coal, which send certain chemicals into the air.

    汽车工厂燃烧汽油煤炭会释放有害化学物质。

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